swaybar: implement mouse events for tray

2 files changed, 95 insertions, 2 deletions

diff --git a/swaybar/bar.c b/swaybar/bar.c
index 668168eb..ebb9bc12 100644
--- a/swaybar/bar.c
+++ b/swaybar/bar.c
@@ -215,12 +215,16 @@ 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,
diff --git a/swaybar/tray/item.c b/swaybar/tray/item.c
index 019e8ed0..450b6882 100644
--- a/swaybar/tray/item.c
+++ b/swaybar/tray/item.c
@@ -5,6 +5,7 @@
 #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"
@@ -13,6 +14,7 @@
 #include "cairo.h"
 #include "list.h"
 #include "log.h"
+#include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 // TODO menu
 
@@ -248,6 +250,83 @@ void destroy_sni(struct swaybar_sni *sni) {
         free(sni);
 }
 
+static void handle_click(struct swaybar_sni *sni, int x, int y,
+                enum x11_button button, int delta) {
+        const char *method = sni->tray->bar->config->tray_bindings[button];
+        if (!method) {
+                static const char *default_bindings[10] = {
+                        "nop",
+                        "Activate",
+                        "SecondaryActivate",
+                        "ContextMenu",
+                        "ScrollUp",
+                        "ScrollDown",
+                        "ScrollLeft",
+                        "ScrollRight",
+                        "nop",
+                        "nop"
+                };
+                method = default_bindings[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;
+
+                int ret = sd_bus_call_method_async(sni->tray->bus, NULL, sni->service,
+                                sni->path, sni->interface, "Scroll", NULL, NULL, "is",
+                                delta*sign, orientation);
+                if (ret < 0) {
+                        wlr_log(WLR_DEBUG, "Failed to scroll on SNI: %s", strerror(-ret));
+                }
+        } else {
+                int ret = sd_bus_call_method_async(sni->tray->bus, NULL, sni->service,
+                                sni->path, sni->interface, method, NULL, NULL, "ii", x, y);
+                if (ret < 0) {
+                        wlr_log(WLR_DEBUG, "Failed to click on SNI: %s", strerror(-ret));
+                }
+        }
+}
+
+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,
+                int x, int y, enum x11_button button, void *data) {
+        wlr_log(WLR_DEBUG, "Clicked on Status Notifier Item '%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);
+
+                wlr_log(WLR_DEBUG, "Guessing click 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 {
+                wlr_log(WLR_DEBUG, "but it doesn't exist");
+        }
+
+        return HOTSPOT_PROCESS;
+}
+
 uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
                 struct swaybar_sni *sni) {
         uint32_t height = output->height * output->scale;
@@ -316,5 +395,15 @@ uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
 
         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;
 }