rendering

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 {

include/swaybar/tray/item_kde.h

@@ -35,5 +35,6 @@ struct swaybar_sni_kde {
 
 struct swaybar_sni_kde *create_sni(char *id, struct swaybar_tray *tray);
 void destroy_sni(struct swaybar_sni_kde *sni);
+void sni_handle_click(struct swaybar_sni_kde *sni, int x, int y, enum x11_button button);
 
 #endif

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

@@ -92,3 +92,26 @@ void destroy_sni(struct swaybar_sni_kde *sni) {
 	// free(sni->attention_icon_name);
 	free(sni);
 }
+
+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 = "ContextMenu"; break;
+		case RIGHT: method = "Activate"; break; // TODO use itemismenu prop
+		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);
+	}
+}

swaybar/tray/tray.c

@@ -1,12 +1,17 @@
+#define _POSIX_C_SOURCE 200809L
 #include <cairo.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 #include "swaybar/bar.h"
+#include "swaybar/config.h"
+#include "swaybar/input.h"
 #include "swaybar/tray/icon.h"
 #include "swaybar/tray/item_kde.h"
 #include "swaybar/tray/host_kde.h"
 #include "swaybar/tray/tray.h"
 #include "swaybar/tray/watcher_kde.h"
+#include "cairo.h"
 #include "log.h"
 
 struct swaybar_tray *create_tray(void) {
@@ -56,6 +61,80 @@ void tray_in(int fd, short mask, void *data) {
 	}
 }
 
+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_tray(cairo_t *cairo, struct swaybar_output *output, double *x) {
-	return 0; // placeholder
+	struct swaybar_tray *tray = output->bar->tray;
+	struct swaybar_host_kde *host_kde = tray->host_kde;
+
+	uint32_t height = output->height * output->scale;
+
+	for (int i = 0; i < host_kde->items->length; ++i) {
+		struct swaybar_sni_kde *sni = host_kde->items->items[i];
+		cairo_surface_t *icon = sni->icon;
+
+		int icon_height = cairo_image_surface_get_height(icon);
+		int icon_width = cairo_image_surface_get_width(icon);
+
+
+		int padding = 2; // TODO get from config
+
+		int padded_height = icon_height + 2*padding;
+		int padded_width = icon_width + 2*padding;
+
+		if (padded_height > (int) height) {
+			int width = (double) (height - 2*padding) / icon_height * icon_width;
+
+			icon = cairo_image_surface_scale(icon, width, height - 2*padding); // TODO free
+
+			padded_height = height;
+			padded_width = width + 2*padding;
+		}
+
+		*x -= padded_width;
+		double y = (int) floor((height - padded_height) / 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_width, padded_height);
+		cairo_fill(cairo);
+		cairo_set_operator(cairo, op);
+
+		struct swaybar_hotspot *hotspot = calloc(1, sizeof(struct swaybar_hotspot));
+		hotspot->x = *x;
+		hotspot->y = 0;
+		hotspot->width = icon_width;
+		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;
 }