Merge branch 'master' into feature/wlr-seat-touch

README.md

@@ -33,3 +33,17 @@ Run these commands:
     ninja -C build
 
 (On FreeBSD, you need to pass an extra flag to prevent a linking error: `meson build -D b_lundef=false`)
+
+## Running the Reference Compositor
+
+wlroots comes with a reference compositor called rootston that demonstrates the
+features of the library.
+
+After building, run rootston from a terminal or VT with:
+
+    ./build/rootston/rootston
+
+Now you can run windows in the compositor from the command line or by
+configuring bindings in your
+[`rootston.ini`](https://github.com/swaywm/wlroots/blob/master/rootston/rootston.ini.example)
+file. 

backend/libinput/events.c

@@ -66,10 +66,11 @@ static void handle_device_added(struct wlr_libinput_backend *backend,
 	int product = libinput_device_get_id_product(libinput_dev);
 	const char *name = libinput_device_get_name(libinput_dev);
 	struct wl_list *wlr_devices = calloc(1, sizeof(struct wl_list));
-	wl_list_init(wlr_devices);
 	if (!wlr_devices) {
-		goto fail;
+		wlr_log(L_ERROR, "Allocation failed");
+		return;
 	}
+	wl_list_init(wlr_devices);
 	wlr_log(L_DEBUG, "Added %s [%d:%d]", name, vendor, product);
 
 	if (libinput_device_has_capability(libinput_dev, LIBINPUT_DEVICE_CAP_KEYBOARD)) {

backend/session/session.c

@@ -249,7 +249,7 @@ static size_t explicit_find_gpus(struct wlr_session *session,
 		}
 	} while ((ptr = strtok_r(NULL, ":", &save)));
 
-	free(ptr);
+	free(gpus);
 	return i;
 }
 

backend/wayland/backend.c

@@ -12,10 +12,15 @@
 #include "backend/wayland.h"
 #include "xdg-shell-unstable-v6-client-protocol.h"
 
-
 static int dispatch_events(int fd, uint32_t mask, void *data) {
 	struct wlr_wl_backend *backend = data;
 	int count = 0;
+
+	if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
+		wl_display_terminate(backend->local_display);
+		return 0;
+	}
+
 	if (mask & WL_EVENT_READABLE) {
 		count = wl_display_dispatch(backend->remote_display);
 	}
@@ -36,7 +41,7 @@ static bool wlr_wl_backend_start(struct wlr_backend *_backend) {
 	wlr_log(L_INFO, "Initializating wayland backend");
 
 	wlr_wl_registry_poll(backend);
-	if (!(backend->compositor) || (!(backend->shell))) {
+	if (!backend->compositor || !backend->shell) {
 		wlr_log_errno(L_ERROR, "Could not obtain retrieve required globals");
 		return false;
 	}
@@ -49,10 +54,9 @@ static bool wlr_wl_backend_start(struct wlr_backend *_backend) {
 
 	struct wl_event_loop *loop = wl_display_get_event_loop(backend->local_display);
 	int fd = wl_display_get_fd(backend->remote_display);
-	int events = WL_EVENT_READABLE | WL_EVENT_ERROR |
+	int events = WL_EVENT_READABLE | WL_EVENT_ERROR | WL_EVENT_HANGUP;
-		WL_EVENT_HANGUP;
 	backend->remote_display_src = wl_event_loop_add_fd(loop, fd, events,
-			dispatch_events, backend);
+		dispatch_events, backend);
 	wl_event_source_check(backend->remote_display_src);
 
 	return true;

backend/x11/backend.c

@@ -155,9 +155,14 @@ static bool handle_x11_event(struct wlr_x11_backend *x11, xcb_generic_event_t *e
 
 static int x11_event(int fd, uint32_t mask, void *data) {
 	struct wlr_x11_backend *x11 = data;
+
+	if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
+		wl_display_terminate(x11->wl_display);
+		return 0;
+	}
+
 	xcb_generic_event_t *e;
 	bool quit = false;
-
 	while (!quit && (e = xcb_poll_for_event(x11->xcb_conn))) {
 		quit = handle_x11_event(x11, e);
 		free(e);
@@ -205,7 +210,8 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
 
 	int fd = xcb_get_file_descriptor(x11->xcb_conn);
 	struct wl_event_loop *ev = wl_display_get_event_loop(display);
-	x11->event_source = wl_event_loop_add_fd(ev, fd, WL_EVENT_READABLE, x11_event, x11);
+	int events = WL_EVENT_READABLE | WL_EVENT_ERROR | WL_EVENT_HANGUP;
+	x11->event_source = wl_event_loop_add_fd(ev, fd, events, x11_event, x11);
 	if (!x11->event_source) {
 		wlr_log(L_ERROR, "Could not create event source");
 		goto error_x11;

include/rootston/keyboard.h

@@ -16,7 +16,8 @@ struct roots_keyboard {
 	struct wl_listener keyboard_key;
 	struct wl_listener keyboard_modifiers;
 
-	xkb_keysym_t pressed_keysyms[ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP];
+	xkb_keysym_t pressed_keysyms_translated[ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP];
+	xkb_keysym_t pressed_keysyms_raw[ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP];
 };
 
 struct roots_keyboard *roots_keyboard_create(struct wlr_input_device *device,

rootston/config.c

@@ -405,7 +405,7 @@ void roots_config_destroy(struct roots_config *config) {
 	}
 
 	struct roots_keyboard_config *kc, *ktmp = NULL;
-	wl_list_for_each_safe(kc, ktmp, &config->bindings, link) {
+	wl_list_for_each_safe(kc, ktmp, &config->keyboards, link) {
 		free(kc->name);
 		free(kc->rules);
 		free(kc->model);

rootston/cursor.c

@@ -18,9 +18,9 @@ struct roots_cursor *roots_cursor_create(struct roots_seat *seat) {
 	}
 	cursor->cursor = wlr_cursor_create();
 	if (!cursor->cursor) {
+		free(cursor);
 		return NULL;
 	}
-
 	return cursor;
 }
 

rootston/keyboard.c

@@ -13,16 +13,76 @@
 #include "rootston/seat.h"
 #include "rootston/keyboard.h"
 
-static ssize_t keyboard_pressed_keysym_index(struct roots_keyboard *keyboard,
+static ssize_t pressed_keysyms_index(xkb_keysym_t *pressed_keysyms,
 		xkb_keysym_t keysym) {
-	for (size_t i = 0; i < ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP; i++) {
+	for (size_t i = 0; i < ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP; ++i) {
-		if (keyboard->pressed_keysyms[i] == keysym) {
+		if (pressed_keysyms[i] == keysym) {
 			return i;
 		}
 	}
 	return -1;
 }
 
+static size_t pressed_keysyms_length(xkb_keysym_t *pressed_keysyms) {
+	size_t n = 0;
+	for (size_t i = 0; i < ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP; ++i) {
+		if (pressed_keysyms[i] != XKB_KEY_NoSymbol) {
+			++n;
+		}
+	}
+	return n;
+}
+
+static void pressed_keysyms_add(xkb_keysym_t *pressed_keysyms,
+		xkb_keysym_t keysym) {
+	ssize_t i = pressed_keysyms_index(pressed_keysyms, keysym);
+	if (i < 0) {
+		i = pressed_keysyms_index(pressed_keysyms, XKB_KEY_NoSymbol);
+		if (i >= 0) {
+			pressed_keysyms[i] = keysym;
+		}
+	}
+}
+
+static void pressed_keysyms_remove(xkb_keysym_t *pressed_keysyms,
+		xkb_keysym_t keysym) {
+	ssize_t i = pressed_keysyms_index(pressed_keysyms, keysym);
+	if (i >= 0) {
+		pressed_keysyms[i] = XKB_KEY_NoSymbol;
+	}
+}
+
+static bool keysym_is_modifier(xkb_keysym_t keysym) {
+	switch (keysym) {
+	case XKB_KEY_Shift_L: case XKB_KEY_Shift_R:
+	case XKB_KEY_Control_L: case XKB_KEY_Control_R:
+	case XKB_KEY_Caps_Lock:
+	case XKB_KEY_Shift_Lock:
+	case XKB_KEY_Meta_L: case XKB_KEY_Meta_R:
+	case XKB_KEY_Alt_L: case XKB_KEY_Alt_R:
+	case XKB_KEY_Super_L: case XKB_KEY_Super_R:
+	case XKB_KEY_Hyper_L: case XKB_KEY_Hyper_R:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static void pressed_keysyms_update(xkb_keysym_t *pressed_keysyms,
+		const xkb_keysym_t *keysyms, size_t keysyms_len,
+		enum wlr_key_state state) {
+	for (size_t i = 0; i < keysyms_len; ++i) {
+		if (keysym_is_modifier(keysyms[i])) {
+			continue;
+		}
+		if (state == WLR_KEY_PRESSED) {
+			pressed_keysyms_add(pressed_keysyms, keysyms[i]);
+		} else { // WLR_KEY_RELEASED
+			pressed_keysyms_remove(pressed_keysyms, keysyms[i]);
+		}
+	}
+}
+
 static const char *exec_prefix = "exec ";
 
 static void keyboard_binding_execute(struct roots_keyboard *keyboard,
@@ -56,21 +116,14 @@ static void keyboard_binding_execute(struct roots_keyboard *keyboard,
 }
 
 /**
- * Process a keypress from the keyboard.
+ * Execute a built-in, hardcoded compositor binding. These are triggered from a
+ * single keysym.
  *
  * Returns true if the keysym was handled by a binding and false if the event
  * should be propagated to clients.
  */
-static bool keyboard_keysym_press(struct roots_keyboard *keyboard,
+static bool keyboard_execute_compositor_binding(struct roots_keyboard *keyboard,
 		xkb_keysym_t keysym) {
-	ssize_t i = keyboard_pressed_keysym_index(keyboard, keysym);
-	if (i < 0) {
-		i = keyboard_pressed_keysym_index(keyboard, XKB_KEY_NoSymbol);
-		if (i >= 0) {
-			keyboard->pressed_keysyms[i] = keysym;
-		}
-	}
-
 	if (keysym >= XKB_KEY_XF86Switch_VT_1 &&
 			keysym <= XKB_KEY_XF86Switch_VT_12) {
 		struct roots_server *server = keyboard->input->server;
@@ -90,17 +143,37 @@ static bool keyboard_keysym_press(struct roots_keyboard *keyboard,
 		wlr_seat_keyboard_end_grab(keyboard->seat->seat);
 	}
 
-	uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
+	return false;
+}
+
+/**
+ * Execute keyboard bindings. These include compositor bindings and user-defined
+ * bindings.
+ *
+ * Returns true if the keysym was handled by a binding and false if the event
+ * should be propagated to clients.
+ */
+static bool keyboard_execute_binding(struct roots_keyboard *keyboard,
+		xkb_keysym_t *pressed_keysyms, uint32_t modifiers,
+		const xkb_keysym_t *keysyms, size_t keysyms_len) {
+	for (size_t i = 0; i < keysyms_len; ++i) {
+		if (keyboard_execute_compositor_binding(keyboard, keysyms[i])) {
+			return true;
+		}
+	}
+
+	// User-defined bindings
+	size_t n = pressed_keysyms_length(pressed_keysyms);
 	struct wl_list *bindings = &keyboard->input->server->config->bindings;
 	struct roots_binding_config *bc;
 	wl_list_for_each(bc, bindings, link) {
-		if (modifiers ^ bc->modifiers) {
+		if (modifiers ^ bc->modifiers || n != bc->keysyms_len) {
 			continue;
 		}
 
 		bool ok = true;
 		for (size_t i = 0; i < bc->keysyms_len; i++) {
-			ssize_t j = keyboard_pressed_keysym_index(keyboard, bc->keysyms[i]);
+			ssize_t j = pressed_keysyms_index(pressed_keysyms, bc->keysyms[i]);
 			if (j < 0) {
 				ok = false;
 				break;
@@ -116,85 +189,75 @@ static bool keyboard_keysym_press(struct roots_keyboard *keyboard,
 	return false;
 }
 
-static void keyboard_keysym_release(struct roots_keyboard *keyboard,
-		xkb_keysym_t keysym) {
-	ssize_t i = keyboard_pressed_keysym_index(keyboard, keysym);
-	if (i >= 0) {
-		keyboard->pressed_keysyms[i] = XKB_KEY_NoSymbol;
-	}
-}
 /*
- * Process keypresses from the keyboard as xkb sees them.
+ * Get keysyms and modifiers from the keyboard as xkb sees them.
  *
  * This uses the xkb keysyms translation based on pressed modifiers and clears
  * the consumed modifiers from the list of modifiers passed to keybind
  * detection.
  *
- * (On US layout) this will trigger: [Alt]+[at]
+ * On US layout, pressing Alt+Shift+2 will trigger Alt+@.
  */
-static bool keyboard_keysyms_xkb(struct roots_keyboard *keyboard,
+static size_t keyboard_keysyms_translated(struct roots_keyboard *keyboard,
-		uint32_t keycode, enum wlr_key_state state) {
+		xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
-	uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
+		uint32_t *modifiers) {
-	const xkb_keysym_t *syms;
+	*modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
-	int syms_len = xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state,
+	xkb_mod_mask_t consumed = xkb_state_key_get_consumed_mods2(
-		keycode, &syms);
-	uint32_t consumed = xkb_state_key_get_consumed_mods2(
 		keyboard->device->keyboard->xkb_state, keycode, XKB_CONSUMED_MODE_XKB);
+	*modifiers = *modifiers & ~consumed;
 
-	modifiers = modifiers & ~consumed;
+	return xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state,
-
+		keycode, keysyms);
-	bool handled = false;
-	for (int i = 0; i < syms_len; i++) {
-		if (state) {
-			bool keysym_handled =
-				keyboard_keysym_press(keyboard, syms[i]);
-			handled = handled || keysym_handled;
-		} else { // WLR_KEY_RELEASED
-			keyboard_keysym_release(keyboard, syms[i]);
-		}
-	}
-
-	return handled;
 }
+
 /*
- * Process keypresses from the keyboard as if modifiers didn't change keysyms.
+ * Get keysyms and modifiers from the keyboard as if modifiers didn't change
+ * keysyms.
  *
  * This avoids the xkb keysym translation based on modifiers considered pressed
- * in the state and uses the list of modifiers saved on the rootston side.
+ * in the state.
  *
- * This will trigger the keybind: [Alt]+[Shift]+2
+ * This will trigger keybinds such as Alt+Shift+2.
  */
-static bool keyboard_keysyms_simple(struct roots_keyboard *keyboard,
+static size_t keyboard_keysyms_raw(struct roots_keyboard *keyboard,
-		uint32_t keycode, enum wlr_key_state state) {
+		xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
-	const xkb_keysym_t *syms;
+		uint32_t *modifiers) {
+	*modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
+
 	xkb_layout_index_t layout_index = xkb_state_key_get_layout(
 		keyboard->device->keyboard->xkb_state, keycode);
-	int syms_len = xkb_keymap_key_get_syms_by_level(
+	return xkb_keymap_key_get_syms_by_level(keyboard->device->keyboard->keymap,
-		keyboard->device->keyboard->keymap, keycode, layout_index, 0, &syms);
+		keycode, layout_index, 0, keysyms);
-
-	bool handled = false;
-	for (int i = 0; i < syms_len; i++) {
-		if (state) {
-			bool keysym_handled = keyboard_keysym_press(keyboard, syms[i]);
-			handled = handled || keysym_handled;
-		} else { // WLR_KEY_RELEASED
-			keyboard_keysym_release(keyboard, syms[i]);
-		}
-	}
-
-	return handled;
 }
 
 void roots_keyboard_handle_key(struct roots_keyboard *keyboard,
 		struct wlr_event_keyboard_key *event) {
-	uint32_t keycode = event->keycode + 8;
+	xkb_keycode_t keycode = event->keycode + 8;
+
+	bool handled = false;
+	uint32_t modifiers;
+	const xkb_keysym_t *keysyms;
+	size_t keysyms_len;
 
-	bool handled = keyboard_keysyms_xkb(keyboard, keycode, event->state);
+	// Handle translated keysyms
 
-	if (!handled) {
+	keysyms_len = keyboard_keysyms_translated(keyboard, keycode, &keysyms,
-		bool key_handled = keyboard_keysyms_simple(keyboard, keycode,
+		&modifiers);
-			event->state);
+	pressed_keysyms_update(keyboard->pressed_keysyms_translated, keysyms,
-		handled = handled || key_handled;
+		keysyms_len, event->state);
+	if (event->state == WLR_KEY_PRESSED) {
+		handled = keyboard_execute_binding(keyboard,
+			keyboard->pressed_keysyms_translated, modifiers, keysyms,
+			keysyms_len);
+	}
+
+	// Handle raw keysyms
+	keysyms_len = keyboard_keysyms_raw(keyboard, keycode, &keysyms, &modifiers);
+	pressed_keysyms_update(keyboard->pressed_keysyms_raw, keysyms, keysyms_len,
+		event->state);
+	if (event->state == WLR_KEY_PRESSED && !handled) {
+		handled = keyboard_execute_binding(keyboard,
+			keyboard->pressed_keysyms_raw, modifiers, keysyms, keysyms_len);
 	}
 
 	if (!handled) {

rootston/rootston.ini.example

@@ -40,6 +40,6 @@ meta-key = Logo
 # - "close" to close the current view
 # - "next_window" to cycle through windows
 [bindings]
-Logo+Shift+E = exit
+Logo+Shift+e = exit
 Logo+q = close
 Alt+Tab = next_window

rootston/seat.c

@@ -274,7 +274,6 @@ struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
 	seat->seat = wlr_seat_create(input->server->wl_display, name);
 	if (!seat->seat) {
 		free(seat);
-		roots_cursor_destroy(seat->cursor);
 		return NULL;
 	}
 

types/wlr_data_device.c

@@ -713,7 +713,10 @@ static void data_device_start_drag(struct wl_client *client,
 
 	if (!seat_client_start_drag(seat_client, source, icon, origin, serial)) {
 		wl_resource_post_no_memory(device_resource);
-	} else {
+		return;
+	}
+
+	if (source) {
 		source->seat_client = seat_client;
 	}
 }

types/wlr_keyboard.c

@@ -105,7 +105,10 @@ void wlr_keyboard_init(struct wlr_keyboard *kb,
 }
 
 void wlr_keyboard_destroy(struct wlr_keyboard *kb) {
-	if (kb && kb->impl && kb->impl->destroy) {
+	if (kb == NULL) {
+		return;
+	}
+	if (kb->impl && kb->impl->destroy) {
 		kb->impl->destroy(kb);
 	} else {
 		wl_list_remove(&kb->events.key.listener_list);

types/wlr_output.c

@@ -29,8 +29,7 @@ static void wl_output_send_to_resource(struct wl_resource *resource) {
 	if (version >= WL_OUTPUT_MODE_SINCE_VERSION) {
 		struct wlr_output_mode *mode;
 		wl_list_for_each(mode, &output->modes, link) {
-			// TODO: mode->flags should just be preferred
+			uint32_t flags = mode->flags & WL_OUTPUT_MODE_PREFERRED;
-			uint32_t flags = mode->flags;
 			if (output->current_mode == mode) {
 				flags |= WL_OUTPUT_MODE_CURRENT;
 			}
@@ -62,13 +61,17 @@ static void wlr_output_send_current_mode_to_resource(
 	}
 	if (output->current_mode != NULL) {
 		struct wlr_output_mode *mode = output->current_mode;
-		wl_output_send_mode(resource, mode->flags | WL_OUTPUT_MODE_CURRENT,
+		uint32_t flags = mode->flags & WL_OUTPUT_MODE_PREFERRED;
+		wl_output_send_mode(resource, flags | WL_OUTPUT_MODE_CURRENT,
 			mode->width, mode->height, mode->refresh);
 	} else {
 		// Output has no mode, send the current width/height
 		wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, output->width,
 			output->height, 0);
 	}
+	if (version >= WL_OUTPUT_DONE_SINCE_VERSION) {
+		wl_output_send_done(resource);
+	}
 }
 
 static void wl_output_destroy(struct wl_resource *resource) {
@@ -163,6 +166,9 @@ bool wlr_output_set_mode(struct wlr_output *output,
 
 void wlr_output_update_size(struct wlr_output *output, int32_t width,
 		int32_t height) {
+	if (output->width == width && output->height == height) {
+		return;
+	}
 	output->width = width;
 	output->height = height;
 	wlr_output_update_matrix(output);

types/wlr_screenshooter.c

@@ -85,6 +85,7 @@ static void screenshooter_shoot(struct wl_client *client,
 	struct wlr_screenshot *screenshot =
 		calloc(1, sizeof(struct wlr_screenshot));
 	if (!screenshot) {
+		free(pixels);
 		wl_resource_post_no_memory(screenshooter_resource);
 		return;
 	}
@@ -96,6 +97,7 @@ static void screenshooter_shoot(struct wl_client *client,
 		wl_resource_get_version(screenshooter_resource), id);
 	if (screenshot->resource == NULL) {
 		free(screenshot);
+		free(pixels);
 		wl_resource_post_no_memory(screenshooter_resource);
 		return;
 	}
@@ -109,6 +111,7 @@ static void screenshooter_shoot(struct wl_client *client,
 	if (!state) {
 		wl_resource_destroy(screenshot->resource);
 		free(screenshot);
+		free(pixels);
 		wl_resource_post_no_memory(screenshooter_resource);
 		return;
 	}

types/wlr_wl_shell.c

@@ -347,7 +347,7 @@ static void shell_surface_protocol_set_popup(struct wl_client *client,
 	transient_state->flags = flags;
 
 	struct wlr_wl_shell_surface_popup_state *popup_state =
-		calloc(1, sizeof(struct wlr_wl_shell_surface_transient_state));
+		calloc(1, sizeof(struct wlr_wl_shell_surface_popup_state));
 	if (popup_state == NULL) {
 		free(transient_state);
 		wl_client_post_no_memory(client);