Tray: Implement dbusmenu

Co-authored-by: Ian Fan <ianfan0@gmail.com>
Co-authored-by: Nathan Schulte <nmschulte@gmail.com>

Signed-off-by: Felix Weilbach <felix.weilbach@t-online.de>

include/swaybar/bar.h

@@ -33,6 +33,7 @@ struct swaybar {
 	struct zxdg_output_manager_v1 *xdg_output_manager;
 	struct wp_cursor_shape_manager_v1 *cursor_shape_manager;
 	struct wl_shm *shm;
+	struct xdg_wm_base *wm_base;
 
 	struct swaybar_config *config;
 	struct status_line *status;

include/swaybar/input.h

@@ -15,6 +15,7 @@
 
 struct swaybar;
 struct swaybar_output;
+struct swaybar_seat;
 
 struct swaybar_pointer {
 	struct wl_pointer *pointer;
@@ -48,8 +49,8 @@ struct swaybar_hotspot {
 	struct wl_list link; // swaybar_output::hotspots
 	int x, y, width, height;
 	enum hotspot_event_handling (*callback)(struct swaybar_output *output,
-		struct swaybar_hotspot *hotspot, double x, double y, uint32_t button,
-		bool released, void *data);
+			struct swaybar_hotspot *hotspot, struct swaybar_seat *seat, uint32_t serial,
+			double x, double y, uint32_t button, bool released, void *data);
 	void (*destroy)(void *data);
 	void *data;
 };

include/swaybar/tray/dbusmenu.h

@@ -0,0 +1,27 @@
+#ifndef _SWAYBAR_TRAY_DBUSMENU_H
+#define _SWAYBAR_TRAY_DBUSMENU_H
+
+#include "swaybar/bar.h"
+#include "swaybar/tray/item.h"
+
+void swaybar_dbusmenu_open(struct swaybar_sni *sni,
+		struct swaybar_output *output, struct swaybar_seat *seat, uint32_t serial,
+		int x, int y);
+
+bool dbusmenu_pointer_button(void *data, struct wl_pointer *wl_pointer,
+		uint32_t serial, uint32_t time_, uint32_t button, uint32_t state);
+
+bool dbusmenu_pointer_motion(struct swaybar_seat *seat, struct wl_pointer *wl_pointer,
+		uint32_t time_, wl_fixed_t surface_x, wl_fixed_t surface_y);
+
+bool dbusmenu_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);
+
+bool dbusmenu_pointer_leave(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
+		struct wl_surface *surface);
+
+bool dbusmenu_pointer_frame(struct swaybar_seat *data, struct wl_pointer *wl_pointer);
+
+bool dbusmenu_pointer_axis(struct swaybar_seat *data, struct wl_pointer *wl_pointer);
+
+#endif

include/swaybar/tray/item.h

@@ -18,6 +18,7 @@ struct swaybar_pixmap {
 struct swaybar_sni_slot {
 	struct wl_list link; // swaybar_sni::slots
 	struct swaybar_sni *sni;
+	int menu_id;
 	const char *prop;
 	const char *type;
 	void *dest;
@@ -48,6 +49,7 @@ struct swaybar_sni {
 	char *icon_theme_path; // non-standard KDE property
 
 	struct wl_list slots; // swaybar_sni_slot::link
+	char **menu_icon_theme_paths;
 };
 
 struct swaybar_sni *create_sni(char *id, struct swaybar_tray *tray);

include/swaybar/tray/tray.h

@@ -32,6 +32,9 @@ struct swaybar_tray {
 
 	list_t *basedirs; // char *
 	list_t *themes; // struct swaybar_theme *
+
+	struct swaybar_dbusmenu *menu;
+	struct swaybar_dbusmenu_menu *menu_pointer_focus;
 };
 
 struct swaybar_tray *create_tray(struct swaybar *bar);

swaybar/bar.c

@@ -28,6 +28,7 @@
 #include "pool-buffer.h"
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 #include "xdg-output-unstable-v1-client-protocol.h"
+#include "xdg-shell-client-protocol.h"
 
 void free_workspaces(struct wl_list *list) {
 	struct swaybar_workspace *ws, *tmp;
@@ -364,6 +365,8 @@ static void handle_global(void *data, struct wl_registry *registry,
 	} else if (strcmp(interface, wp_cursor_shape_manager_v1_interface.name) == 0) {
 		bar->cursor_shape_manager = wl_registry_bind(registry, name,
 			&wp_cursor_shape_manager_v1_interface, 1);
+	} else if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
+		bar->wm_base = wl_registry_bind(registry, name, &xdg_wm_base_interface, 1);
 	}
 }
 
@@ -538,6 +541,7 @@ void bar_teardown(struct swaybar *bar) {
 #if HAVE_TRAY
 	destroy_tray(bar->tray);
 #endif
+	xdg_wm_base_destroy(bar->wm_base);
 	free_outputs(&bar->outputs);
 	free_outputs(&bar->unused_outputs);
 	free_seats(&bar->seats);

swaybar/input.c

@@ -10,6 +10,10 @@
 #include "swaybar/input.h"
 #include "swaybar/ipc.h"
 
+#if HAVE_TRAY
+#include "swaybar/tray/dbusmenu.h"
+#endif
+
 void free_hotspots(struct wl_list *list) {
 	struct swaybar_hotspot *hotspot, *tmp;
 	wl_list_for_each_safe(hotspot, tmp, list, link) {
@@ -131,10 +135,23 @@ static void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
 		pointer->serial = serial;
 		update_cursor(seat);
 	}
+
+#if HAVE_TRAY
+	if (dbusmenu_pointer_enter(data, wl_pointer, serial, surface, surface_x,
+		surface_y)) {
+		return;
+	}
+#endif
 }
 
 static void wl_pointer_leave(void *data, struct wl_pointer *wl_pointer,
 		uint32_t serial, struct wl_surface *surface) {
+#if HAVE_TRAY
+	if (dbusmenu_pointer_leave(data, wl_pointer, serial, surface)) {
+		return;
+	}
+#endif
+
 	struct swaybar_seat *seat = data;
 	seat->pointer.current = NULL;
 }
@@ -144,6 +161,11 @@ static void wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
 	struct swaybar_seat *seat = data;
 	seat->pointer.x = wl_fixed_to_double(surface_x);
 	seat->pointer.y = wl_fixed_to_double(surface_y);
+#if HAVE_TRAY
+	if (dbusmenu_pointer_motion(data, wl_pointer, time, surface_x, surface_y)) {
+		return;
+	}
+#endif
 }
 
 static bool check_bindings(struct swaybar *bar, uint32_t button,
@@ -160,6 +182,7 @@ static bool check_bindings(struct swaybar *bar, uint32_t button,
 }
 
 static bool process_hotspots(struct swaybar_output *output,
+		struct swaybar_seat *seat, uint32_t serial,
 		double x, double y, uint32_t button, uint32_t state) {
 	bool released = state == WL_POINTER_BUTTON_STATE_RELEASED;
 	struct swaybar_hotspot *hotspot;
@@ -167,7 +190,7 @@ static bool process_hotspots(struct swaybar_output *output,
 		if (x >= hotspot->x && y >= hotspot->y
 				&& x < hotspot->x + hotspot->width
 				&& y < hotspot->y + hotspot->height) {
-			if (HOTSPOT_IGNORE == hotspot->callback(output, hotspot, x, y,
+			if (HOTSPOT_IGNORE == hotspot->callback(output, hotspot, seat, serial, x, y,
 					button, released, hotspot->data)) {
 				return true;
 			}
@@ -180,13 +203,19 @@ static bool process_hotspots(struct swaybar_output *output,
 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_seat *seat = data;
+#if HAVE_TRAY
+	if (dbusmenu_pointer_button(seat, wl_pointer, serial, time, button,
+				state)) {
+		return;
+	}
+#endif
 	struct swaybar_pointer *pointer = &seat->pointer;
 	struct swaybar_output *output = pointer->current;
 	if (!sway_assert(output, "button with no active output")) {
 		return;
 	}
 
-	if (process_hotspots(output, pointer->x, pointer->y, button, state)) {
+	if (process_hotspots(output, seat, serial, pointer->x, pointer->y, button, state)) {
 		return;
 	}
 
@@ -240,7 +269,7 @@ static void process_discrete_scroll(struct swaybar_seat *seat,
 		struct swaybar_output *output, struct swaybar_pointer *pointer,
 		uint32_t axis, wl_fixed_t value) {
 	uint32_t button = wl_axis_to_button(axis, value);
-	if (process_hotspots(output, pointer->x, pointer->y, button, WL_POINTER_BUTTON_STATE_PRESSED)) {
+	if (process_hotspots(output, seat, 0, pointer->x, pointer->y, button, WL_POINTER_BUTTON_STATE_PRESSED)) {
 		// (Currently hotspots don't do anything on release events, so no need to emit one)
 		return;
 	}
@@ -297,6 +326,12 @@ static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
 		return;
 	}
 
+#if HAVE_TRAY
+	if (dbusmenu_pointer_axis(data, wl_pointer)) {
+		return;
+	}
+#endif
+
 	// If there's a while since the last scroll event,
 	// set 'value' to zero as if to reset the "virtual scroll wheel"
 	if (seat->axis[axis].discrete_steps == 0 &&
@@ -313,6 +348,12 @@ static void wl_pointer_frame(void *data, struct wl_pointer *wl_pointer) {
 	struct swaybar_pointer *pointer = &seat->pointer;
 	struct swaybar_output *output = pointer->current;
 
+#if HAVE_TRAY
+	if (dbusmenu_pointer_frame(data, wl_pointer)) {
+		return;
+	}
+#endif
+
 	if (output == NULL) {
 		return;
 	}
@@ -420,7 +461,7 @@ static void wl_touch_up(void *data, struct wl_touch *wl_touch,
 	}
 	if (time - slot->time < 500) {
 		// Tap, treat it like a pointer click
-		process_hotspots(slot->output, slot->x, slot->y, BTN_LEFT, WL_POINTER_BUTTON_STATE_PRESSED);
+		process_hotspots(slot->output, seat, serial, slot->x, slot->y, BTN_LEFT, WL_POINTER_BUTTON_STATE_PRESSED);
 		// (Currently hotspots don't do anything on release events, so no need to emit one)
 	}
 	slot->output = NULL;

swaybar/meson.build

@@ -3,7 +3,8 @@ tray_files = have_tray ? [
 	'tray/icon.c',
 	'tray/item.c',
 	'tray/tray.c',
-	'tray/watcher.c'
+	'tray/watcher.c',
+	'tray/dbusmenu.c'
 ] : []
 
 swaybar_deps = [

swaybar/render.c

@@ -159,6 +159,7 @@ static void render_sharp_line(cairo_t *cairo, uint32_t color,
 
 static enum hotspot_event_handling block_hotspot_callback(
 		struct swaybar_output *output, struct swaybar_hotspot *hotspot,
+		struct swaybar_seat *seat, uint32_t serial,
 		double x, double y, uint32_t button, bool released, void *data) {
 	struct i3bar_block *block = data;
 	struct status_line *status = output->bar->status;
@@ -598,6 +599,7 @@ static uint32_t render_binding_mode_indicator(struct render_context *ctx,
 
 static enum hotspot_event_handling workspace_hotspot_callback(
 		struct swaybar_output *output, struct swaybar_hotspot *hotspot,
+		struct swaybar_seat *seat, uint32_t serial,
 		double x, double y, uint32_t button, bool released, void *data) {
 	if (button != BTN_LEFT) {
 		return HOTSPOT_PROCESS;

swaybar/tray/item.c

@@ -8,6 +8,7 @@
 #include "swaybar/config.h"
 #include "swaybar/image.h"
 #include "swaybar/input.h"
+#include "swaybar/tray/dbusmenu.h"
 #include "swaybar/tray/host.h"
 #include "swaybar/tray/icon.h"
 #include "swaybar/tray/item.h"
@@ -332,8 +333,9 @@ void destroy_sni(struct swaybar_sni *sni) {
 	free(sni);
 }
 
-static void handle_click(struct swaybar_sni *sni, int x, int y,
-		uint32_t button, int delta) {
+static void handle_click(struct swaybar_sni *sni, struct swaybar_output *output,
+		struct swaybar_seat *seat, uint32_t serial, int x, int y, uint32_t button,
+		int delta) {
 	const char *method = NULL;
 	struct tray_binding *binding = NULL;
 	wl_list_for_each(binding, &sni->tray->bar->config->tray_bindings, link) {
@@ -364,7 +366,11 @@ static void handle_click(struct swaybar_sni *sni, int x, int y,
 		method = "ContextMenu";
 	}
 
-	if (strncmp(method, "Scroll", strlen("Scroll")) == 0) {
+	if (strcmp(method, "ContextMenu") == 0) {
+		if (sni->menu && !sni->tray->menu) {
+			swaybar_dbusmenu_open(sni, output, seat, serial, x, y);
+		}
+	} else 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;
@@ -384,6 +390,7 @@ static int cmp_sni_id(const void *item, const void *cmp_to) {
 
 static enum hotspot_event_handling icon_hotspot_callback(
 		struct swaybar_output *output, struct swaybar_hotspot *hotspot,
+		struct swaybar_seat *seat, uint32_t serial,
 		double x, double y, uint32_t button, bool released, void *data) {
 	sway_log(SWAY_DEBUG, "Clicked on %s", (char *)data);
 
@@ -405,7 +412,8 @@ static enum hotspot_event_handling icon_hotspot_callback(
 				(int) output->output_height - config->gaps.bottom - y);
 
 		sway_log(SWAY_DEBUG, "Guessing click position at (%d, %d)", global_x, global_y);
-		handle_click(sni, global_x, global_y, button, 1); // TODO get delta from event
+		// TODO get delta from event
+		handle_click(sni, output, seat, serial, global_x, global_y, button, 1);
 		return HOTSPOT_IGNORE;
 	} else {
 		sway_log(SWAY_DEBUG, "but it doesn't exist");