1 files changed, 161 insertions, 6 deletions

diff --git a/swaybar/bar.c b/swaybar/bar.c
index 0fc41517..f743236c 100644
--- a/swaybar/bar.c
+++ b/swaybar/bar.c
@@ -9,7 +9,13 @@
 #include <sys/wait.h>
 #include <unistd.h>
 #include <wayland-client.h>
+#include <wayland-cursor.h>
 #include <wlr/util/log.h>
+#ifdef __FreeBSD__
+#include <dev/evdev/input-event-codes.h>
+#else
+#include <linux/input-event-codes.h>
+#endif
 #include "swaybar/render.h"
 #include "swaybar/config.h"
 #include "swaybar/event_loop.h"
@@ -18,6 +24,7 @@
 #include "swaybar/ipc.h"
 #include "ipc-client.h"
 #include "list.h"
+#include "log.h"
 #include "pango.h"
 #include "pool-buffer.h"
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
@@ -27,12 +34,6 @@ static void bar_init(struct swaybar *bar) {
         wl_list_init(&bar->outputs);
 }
 
-struct swaybar_output *new_output(const char *name) {
-        struct swaybar_output *output = malloc(sizeof(struct swaybar_output));
-        output->name = strdup(name);
-        return output;
-}
-
 static void layer_surface_configure(void *data,
                 struct zwlr_layer_surface_v1 *surface,
                 uint32_t serial, uint32_t width, uint32_t height) {
@@ -56,12 +57,156 @@ struct zwlr_layer_surface_v1_listener layer_surface_listener = {
         .closed = layer_surface_closed,
 };
 
+static void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
+                uint32_t serial, struct wl_surface *surface,
+                wl_fixed_t surface_x, wl_fixed_t surface_y) {
+        struct swaybar *bar = data;
+        struct swaybar_pointer *pointer = &bar->pointer;
+        struct swaybar_output *output;
+        wl_list_for_each(output, &bar->outputs, link) {
+                if (output->surface == surface) {
+                        pointer->current = output;
+                        break;
+                }
+        }
+        wl_surface_attach(pointer->cursor_surface,
+                        wl_cursor_image_get_buffer(pointer->cursor_image), 0, 0);
+        wl_pointer_set_cursor(wl_pointer, serial, pointer->cursor_surface,
+                        pointer->cursor_image->hotspot_x,
+                        pointer->cursor_image->hotspot_y);
+        wl_surface_commit(pointer->cursor_surface);
+}
+
+static void wl_pointer_leave(void *data, struct wl_pointer *wl_pointer,
+                uint32_t serial, struct wl_surface *surface) {
+        struct swaybar *bar = data;
+        bar->pointer.current = NULL;
+}
+
+static void wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
+                uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {
+        struct swaybar *bar = data;
+        bar->pointer.x = wl_fixed_to_int(surface_x);
+        bar->pointer.y = wl_fixed_to_int(surface_y);
+}
+
+static void wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
+                uint32_t serial, uint32_t time, uint32_t button, uint32_t state) {
+        struct swaybar *bar = data;
+        struct swaybar_pointer *pointer = &bar->pointer;
+        struct swaybar_output *output = pointer->current;
+        if (!sway_assert(output, "button with no active output")) {
+                return;
+        }
+        if (state != WL_POINTER_BUTTON_STATE_PRESSED) {
+                return;
+        }
+        struct swaybar_hotspot *hotspot;
+        wl_list_for_each(hotspot, &output->hotspots, link) {
+                if (pointer->x >= hotspot->x
+                                && pointer->y >= hotspot->y
+                                && pointer->x < hotspot->x + hotspot->width
+                                && pointer->y < hotspot->y + hotspot->height) {
+                        hotspot->callback(output, pointer->x, pointer->y,
+                                        button, hotspot->data);
+                }
+        }
+}
+
+static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
+                uint32_t time, uint32_t axis, wl_fixed_t value) {
+        struct swaybar *bar = data;
+        struct swaybar_output *output = bar->pointer.current;
+        if (!sway_assert(output, "axis with no active output")) {
+                return;
+        }
+        double amt = wl_fixed_to_double(value);
+        if (!bar->config->wrap_scroll) {
+                int i = 0;
+                struct swaybar_workspace *ws = NULL;
+                wl_list_for_each(ws, &output->workspaces, link) {
+                        if (ws->focused) {
+                                break;
+                        }
+                        ++i;
+                }
+                int len = wl_list_length(&output->workspaces);
+                if (!sway_assert(i != len, "axis with null workspace")) {
+                        return;
+                }
+                if (i == 0 && amt > 0) {
+                        return; // Do not wrap
+                }
+                if (i == len - 1 && amt < 0) {
+                        return; // Do not wrap
+                }
+        }
+
+        const char *workspace_name =
+                amt < 0 ?  "prev_on_output" : "next_on_output";
+        ipc_send_workspace_command(bar, workspace_name);
+}
+
+static void wl_pointer_frame(void *data, struct wl_pointer *wl_pointer) {
+        // Who cares
+}
+
+static void wl_pointer_axis_source(void *data, struct wl_pointer *wl_pointer,
+                uint32_t axis_source) {
+        // Who cares
+}
+
+static void wl_pointer_axis_stop(void *data, struct wl_pointer *wl_pointer,
+                uint32_t time, uint32_t axis) {
+        // Who cares
+}
+
+static void wl_pointer_axis_discrete(void *data, struct wl_pointer *wl_pointer,
+                uint32_t axis, int32_t discrete) {
+        // Who cares
+}
+
+struct wl_pointer_listener pointer_listener = {
+        .enter = wl_pointer_enter,
+        .leave = wl_pointer_leave,
+        .motion = wl_pointer_motion,
+        .button = wl_pointer_button,
+        .axis = wl_pointer_axis,
+        .frame = wl_pointer_frame,
+        .axis_source = wl_pointer_axis_source,
+        .axis_stop = wl_pointer_axis_stop,
+        .axis_discrete = wl_pointer_axis_discrete,
+};
+
+static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
+                enum wl_seat_capability caps) {
+        struct swaybar *bar = data;
+        if ((caps & WL_SEAT_CAPABILITY_POINTER)) {
+                bar->pointer.pointer = wl_seat_get_pointer(wl_seat);
+                wl_pointer_add_listener(bar->pointer.pointer, &pointer_listener, bar);
+        }
+}
+
+static void seat_handle_name(void *data, struct wl_seat *wl_seat,
+                const char *name) {
+        // Who cares
+}
+
+const struct wl_seat_listener seat_listener = {
+        .capabilities = seat_handle_capabilities,
+        .name = seat_handle_name,
+};
+
 static void handle_global(void *data, struct wl_registry *registry,
                 uint32_t name, const char *interface, uint32_t version) {
         struct swaybar *bar = data;
         if (strcmp(interface, wl_compositor_interface.name) == 0) {
                 bar->compositor = wl_registry_bind(registry, name,
                                 &wl_compositor_interface, 1);
+        } else if (strcmp(interface, wl_seat_interface.name) == 0) {
+                bar->seat = wl_registry_bind(registry, name,
+                                &wl_seat_interface, 1);
+                wl_seat_add_listener(bar->seat, &seat_listener, bar);
         } else if (strcmp(interface, wl_shm_interface.name) == 0) {
                 bar->shm = wl_registry_bind(registry, name,
                                 &wl_shm_interface, 1);
@@ -74,6 +219,7 @@ static void handle_global(void *data, struct wl_registry *registry,
                                 &wl_output_interface, 1);
                 output->index = index++;
                 wl_list_init(&output->workspaces);
+                wl_list_init(&output->hotspots);
                 wl_list_insert(&bar->outputs, &output->link);
         } else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
                 bar->layer_shell = wl_registry_bind(
@@ -116,6 +262,15 @@ void bar_setup(struct swaybar *bar,
         wl_registry_add_listener(registry, &registry_listener, bar);
         wl_display_roundtrip(bar->display);
         assert(bar->compositor && bar->layer_shell && bar->shm);
+        struct swaybar_pointer *pointer = &bar->pointer;
+
+        assert(pointer->cursor_theme = wl_cursor_theme_load(NULL, 16, bar->shm));
+        struct wl_cursor *cursor;
+        assert(cursor = wl_cursor_theme_get_cursor(
+                                pointer->cursor_theme, "left_ptr"));
+        pointer->cursor_image = cursor->images[0];
+        assert(pointer->cursor_surface =
+                        wl_compositor_create_surface(bar->compositor));
 
         // TODO: we might not necessarily be meant to do all of the outputs
         struct swaybar_output *output;