check for null pointer when getting gaps

See: https://github.com/swaywm/sway/issues/4511

Adds a bool config option `primary_selection`, which explicitly
enables/disables the primary selection clipboard. Defaults to enabled.

This is implemented as a launch-only option which enables or disables the creation of the
`zwp_primary_selection_device_manager_v1` global.

Co-authored-by: Tilde Rose <t1lde@protonmail.com>

.envrc

@@ -0,0 +1 @@
+export PKG_CONFIG_PATH=/usr/lib/wlroots0.17/pkgconfig

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+	"editor.formatOnSave": false,
+	"C_Cpp.default.compileCommands": "/home/alex/forks/swayfx/builddir/compile_commands.json",
+	"C_Cpp.default.configurationProvider": "mesonbuild.mesonbuild",
+	"files.associations": {
+		"*.h": "c"
+	}
+}

common/gesture.c

@@ -90,6 +90,60 @@ char *gesture_parse(const char *input, struct gesture *output) {
 	return NULL;
 }
 
+// Similar to gesture_parse but with fewer checks to match the different
+// workspace_gesture syntax
+char *workspace_gesture_parse(const char *input, struct gesture *output) {
+	// Clear output in case of failure
+	output->type = GESTURE_TYPE_NONE;
+	output->fingers = GESTURE_FINGERS_ANY;
+	output->directions = GESTURE_DIRECTION_NONE;
+
+	// Split input type, fingers and directions
+	list_t *split = split_string(input, ":");
+	if (split->length < 1 || split->length > 2) {
+		return format_str(
+				"expected [:<fingers>][:direction], got %s",
+				input);
+	}
+
+	// Parse optional arguments
+	if (split->length > 1) {
+		char *next = split->items[0];
+
+		// Try to parse as finger count (1-9)
+		if (strlen(next) == 1 && '1' <= next[0] && next[0] <= '9') {
+			output->fingers = atoi(next);
+
+			// Move to next if available
+			next = split->length == 2 ? split->items[1] : NULL;
+		} else if (split->length == 2) {
+			// Fail here if argument can only be finger count
+			return format_str("expected 1-9, got %s", next);
+		}
+
+		// If there is an argument left, try to parse as direction
+		if (next) {
+			list_t *directions = split_string(next, "+");
+
+			for (int i = 0; i < directions->length; ++i) {
+				const char *item = directions->items[i];
+				if (strcmp(item, "horizontal") == 0) {
+					output->type = GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL;
+				} else if (strcmp(item, "vertical") == 0) {
+					output->type = GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL;
+				} else {
+					return format_str("expected direction, got %s", item);
+				}
+			}
+			list_free_items_and_destroy(directions);
+		}
+	} // if optional args
+
+	list_free_items_and_destroy(split);
+
+	return NULL;
+}
+
 const char *gesture_type_string(enum gesture_type type) {
 	switch (type) {
 	case GESTURE_TYPE_NONE:
@@ -100,6 +154,10 @@ const char *gesture_type_string(enum gesture_type type) {
 		return "pinch";
 	case GESTURE_TYPE_SWIPE:
 		return "swipe";
+	case GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL:
+		return "workspace_swipe_horizontal";
+	case GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL:
+		return "workspace_swipe_vertical";
 	}
 
 	return NULL;
@@ -313,6 +371,8 @@ struct gesture *gesture_tracker_end(struct gesture_tracker *tracker) {
 		}
 	// Gesture without any direction
 	case GESTURE_TYPE_HOLD:
+	case GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL:
+	case GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL:
 		break;
 	// Not tracking any gesture
 	case GESTURE_TYPE_NONE:

include/gesture.h

@@ -12,6 +12,8 @@ enum gesture_type {
 	GESTURE_TYPE_HOLD,
 	GESTURE_TYPE_PINCH,
 	GESTURE_TYPE_SWIPE,
+	GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL,
+	GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL,
 };
 
 // Turns single type enum value to constant string representation.
@@ -57,6 +59,13 @@ struct gesture {
  */
 char *gesture_parse(const char *input, struct gesture *output);
 
+/**
+ * Parses workspace gesture from [:<fingers>][:<directions>] string.
+ *
+ * Return NULL on success, otherwise error message string
+ */
+char *workspace_gesture_parse(const char *input, struct gesture *output);
+
 // Turns gesture into string representation
 char *gesture_to_string(struct gesture *gesture);
 

include/sway/commands.h

@@ -115,6 +115,7 @@ sway_cmd cmd_bindcode;
 sway_cmd cmd_bindgesture;
 sway_cmd cmd_bindswitch;
 sway_cmd cmd_bindsym;
+sway_cmd cmd_bindworkspacegesture;
 sway_cmd cmd_blur;
 sway_cmd cmd_blur_brightness;
 sway_cmd cmd_blur_contrast;
@@ -223,11 +224,15 @@ sway_cmd cmd_unbindcode;
 sway_cmd cmd_unbindswitch;
 sway_cmd cmd_unbindgesture;
 sway_cmd cmd_unbindsym;
+sway_cmd cmd_unbindworkspacegesture;
 sway_cmd cmd_unmark;
 sway_cmd cmd_urgent;
 sway_cmd cmd_workspace;
 sway_cmd cmd_workspace_layout;
 sway_cmd cmd_ws_auto_back_and_forth;
+sway_cmd cmd_ws_gesture_spring_size;
+sway_cmd cmd_ws_gesture_threshold;
+sway_cmd cmd_ws_gesture_wrap_around;
 sway_cmd cmd_xwayland;
 
 sway_cmd bar_cmd_bindcode;

include/sway/config.h

@@ -51,6 +51,7 @@ enum binding_flags {
 	BINDING_INHIBITED = 1 << 7, // keyboard only: ignore shortcut inhibitor
 	BINDING_NOREPEAT = 1 << 8, // keyboard only; do not trigger when repeating a held key
 	BINDING_EXACT = 1 << 9, // gesture only; only trigger on exact match
+	BINDING_INVERTED = 1 << 10, // workspace gesture only; gesture is inverted
 };
 
 /**
@@ -501,6 +502,10 @@ struct sway_config {
 	bool titlebar_separator;
 	bool scratchpad_minimize;
 
+	int workspace_gesture_spring_size;
+	bool workspace_gesture_wrap_around;
+	float workspace_gesture_threshold;
+
 	list_t *layer_criteria;
 
 	char *swaynag_command;

include/sway/fx_util/animation_utils.h

@@ -0,0 +1,10 @@
+#ifndef ANIMATION_UTILS_H
+#define ANIMATION_UTILS_H
+
+double lerp (double a, double b, double t);
+
+double ease_out_cubic (double t);
+
+// TODO: Add more easing functions in the future like ease_in and ease_in_out, etc...
+
+#endif

include/sway/output.h

@@ -15,6 +15,19 @@ struct decoration_data get_undecorated_decoration_data();
 struct sway_server;
 struct sway_container;
 
+enum swipe_gesture_direction {
+	SWIPE_GESTURE_DIRECTION_NONE,
+	SWIPE_GESTURE_DIRECTION_HORIZONTAL,
+	SWIPE_GESTURE_DIRECTION_VERTICAL,
+};
+
+struct workspace_scroll {
+	double percent;
+	double avg_velocity;
+	int num_updates;
+	enum swipe_gesture_direction direction;
+};
+
 struct decoration_data {
 	float alpha;
 	float saturation;
@@ -32,6 +45,7 @@ struct render_data {
 	pixman_region32_t *damage;
 	struct wlr_box *clip_box;
 	struct decoration_data deco_data;
+	bool on_focused_workspace;
 	struct sway_view *view;
 };
 
@@ -71,6 +85,8 @@ struct sway_output {
 	struct wl_listener needs_frame;
 	struct wl_listener request_state;
 
+	struct workspace_scroll workspace_scroll;
+
 	struct {
 		struct wl_signal disable;
 	} events;
@@ -227,6 +243,20 @@ void handle_output_manager_test(struct wl_listener *listener, void *data);
 void handle_output_power_manager_set_mode(struct wl_listener *listener,
 	void *data);
 
+struct workspace_scroll workspace_scroll_get_default();
+
+bool workspace_scroll_equal(struct workspace_scroll *a, struct workspace_scroll *b);
+
+void workspace_scroll_begin(struct sway_seat *seat,
+		enum swipe_gesture_direction direction);
+
+void workspace_scroll_update(struct sway_seat *seat, struct gesture_tracker *tracker,
+		struct wlr_pointer_swipe_update_event *event, int invert);
+
+void workspace_scroll_end(struct sway_seat *seat);
+
+void workspace_scroll_reset(struct sway_seat *seat, struct sway_workspace *ws);
+
 struct sway_output_non_desktop *output_non_desktop_create(struct wlr_output *wlr_output);
 
 #endif

include/sway/tree/workspace.h

@@ -70,11 +70,13 @@ struct sway_workspace *workspace_by_number(const char* name);
 
 struct sway_workspace *workspace_by_name(const char*);
 
-struct sway_workspace *workspace_output_next(struct sway_workspace *current);
+struct sway_workspace *workspace_output_next(struct sway_workspace *current,
+		bool should_wrap);
 
 struct sway_workspace *workspace_next(struct sway_workspace *current);
 
-struct sway_workspace *workspace_output_prev(struct sway_workspace *current);
+struct sway_workspace *workspace_output_prev(struct sway_workspace *current,
+		bool should_wrap);
 
 struct sway_workspace *workspace_prev(struct sway_workspace *current);
 

sway/commands.c

@@ -49,6 +49,7 @@ static const struct cmd_handler handlers[] = {
 	{ "bindgesture", cmd_bindgesture },
 	{ "bindswitch", cmd_bindswitch },
 	{ "bindsym", cmd_bindsym },
+	{ "bindworkspacegesture", cmd_bindworkspacegesture },
 	{ "blur", cmd_blur },
     { "blur_brightness", cmd_blur_brightness },
 	{ "blur_contrast", cmd_blur_contrast },
@@ -96,6 +97,7 @@ static const struct cmd_handler handlers[] = {
 	{ "no_focus", cmd_no_focus },
 	{ "output", cmd_output },
 	{ "popup_during_fullscreen", cmd_popup_during_fullscreen },
+	{ "primary_selection", cmd_primary_selection },
 	{ "seat", cmd_seat },
 	{ "set", cmd_set },
 	{ "shadow_blur_radius", cmd_shadow_blur_radius },
@@ -118,8 +120,12 @@ static const struct cmd_handler handlers[] = {
 	{ "unbindgesture", cmd_unbindgesture },
 	{ "unbindswitch", cmd_unbindswitch },
 	{ "unbindsym", cmd_unbindsym },
+	{ "unbindworkspacegesture", cmd_unbindworkspacegesture },
 	{ "workspace", cmd_workspace },
 	{ "workspace_auto_back_and_forth", cmd_ws_auto_back_and_forth },
+	{ "workspace_gesture_spring_size", cmd_ws_gesture_spring_size },
+	{ "workspace_gesture_threshold", cmd_ws_gesture_threshold },
+	{ "workspace_gesture_wrap_around", cmd_ws_gesture_wrap_around },
 };
 
 /* Config-time only commands. Keep alphabetized */

sway/commands/gesture.c

@@ -164,3 +164,76 @@ struct cmd_results *cmd_bindgesture(int argc, char **argv) {
 struct cmd_results *cmd_unbindgesture(int argc, char **argv) {
 	return cmd_bind_or_unbind_gesture(argc, argv, true);
 }
+
+/**
+ * Parse and execute bindgesture or unbindgesture command.
+ */
+static struct cmd_results *cmd_bind_or_unbind_workspacegesture(int argc,
+		char **argv, bool unbind) {
+	int minargs = 1;
+	char *bindtype = "bindgesture";
+	if (unbind) {
+		bindtype = "unbindgesture";
+	}
+
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, bindtype, EXPECTED_AT_LEAST, minargs))) {
+		return error;
+	}
+	struct sway_gesture_binding *binding = calloc(1, sizeof(struct sway_gesture_binding));
+	if (!binding) {
+		return cmd_results_new(CMD_FAILURE, "Unable to allocate binding");
+	}
+	binding->input = strdup("*");
+
+	bool warn = true;
+
+	// Handle flags
+	binding->flags |= BINDING_EXACT;
+	while (argc > 0) {
+		if (strcmp("--inverted", argv[0]) == 0) {
+			binding->flags |= BINDING_INVERTED;
+		} else if (strcmp("--no-warn", argv[0]) == 0) {
+			warn = false;
+		} else if (strncmp("--input-device=", argv[0],
+					strlen("--input-device=")) == 0) {
+			free(binding->input);
+			binding->input = strdup(argv[0] + strlen("--input-device="));
+		} else {
+			break;
+		}
+		argv++;
+		argc--;
+	}
+
+	if (argc < minargs) {
+		free(binding);
+		return cmd_results_new(CMD_FAILURE,
+				"Invalid %s command (expected at least %d "
+				"non-option arguments, got %d)", bindtype, minargs, argc);
+	}
+
+	char* errmsg = NULL;
+	if ((errmsg = workspace_gesture_parse(argv[0], &binding->gesture))) {
+		free(binding);
+		struct cmd_results *final = cmd_results_new(CMD_FAILURE,
+				"Invalid %s command (%s)",
+				bindtype, errmsg);
+		free(errmsg);
+		return final;
+	}
+
+	if (unbind) {
+		return gesture_binding_remove(binding, argv[0]);
+	}
+	binding->command = NULL;
+	return gesture_binding_add(binding, argv[0], warn);
+}
+
+struct cmd_results *cmd_bindworkspacegesture(int argc, char **argv) {
+	return cmd_bind_or_unbind_workspacegesture(argc, argv, false);
+}
+
+struct cmd_results *cmd_unbindworkspacegesture(int argc, char **argv) {
+	return cmd_bind_or_unbind_workspacegesture(argc, argv, true);
+}

sway/commands/workspace.c

@@ -6,10 +6,12 @@
 #include "sway/commands.h"
 #include "sway/config.h"
 #include "sway/input/seat.h"
+#include "sway/output.h"
 #include "sway/tree/workspace.h"
 #include "list.h"
 #include "log.h"
 #include "stringop.h"
+#include "util.h"
 
 static struct workspace_config *workspace_config_find_or_create(char *ws_name) {
 	struct workspace_config *wsc = workspace_find_config(ws_name);

sway/commands/workspace_gesture.c

@@ -0,0 +1,49 @@
+#define _POSIX_C_SOURCE 200809L
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "util.h"
+
+struct cmd_results *cmd_ws_gesture_spring_size(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "workspace_gesture_spring_size", EXPECTED_EQUAL_TO, 1))) {
+		return error;
+	}
+
+	char *inv;
+	int value = strtol(argv[0], &inv, 10);
+	if (*inv != '\0' || value < 0 || value > 250) {
+		return cmd_results_new(CMD_FAILURE, "Invalid size specified");
+	}
+
+	config->workspace_gesture_spring_size = value;
+
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}
+
+struct cmd_results *cmd_ws_gesture_wrap_around(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "workspace_gesture_wrap_around", EXPECTED_EQUAL_TO, 1))) {
+		return error;
+	}
+
+	config->workspace_gesture_wrap_around = parse_boolean(argv[0], true);
+
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}
+
+struct cmd_results *cmd_ws_gesture_threshold(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "workspace_gesture_threshold", EXPECTED_EQUAL_TO, 1))) {
+		return error;
+	}
+
+	char *err;
+	float val = strtof(argv[0], &err);
+	if (*err || val < 0.1f || val > 0.9f) {
+		return cmd_results_new(CMD_INVALID, "workspace_gesture_threshold float invalid. "
+				"Should be between 0.1 and 0.9");
+	}
+	config->workspace_gesture_threshold = val;
+
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}

sway/config.c

@@ -369,6 +369,10 @@ static void config_defaults(struct sway_config *config) {
 	config->titlebar_separator = true;
 	config->scratchpad_minimize = false;
 
+	config->workspace_gesture_spring_size = 50;
+	config->workspace_gesture_wrap_around = false;
+	config->workspace_gesture_threshold = 0.5;
+
 	if (!(config->layer_criteria = create_list())) goto cleanup;
 
 	// The keysym to keycode translation

sway/desktop/output.c

@@ -23,6 +23,7 @@
 #include "log.h"
 #include "scenefx/render/pass.h"
 #include "sway/config.h"
+#include "sway/fx_util/animation_utils.h"
 #include "sway/desktop/transaction.h"
 #include "sway/input/input-manager.h"
 #include "sway/input/seat.h"
@@ -36,6 +37,10 @@
 #include "sway/tree/root.h"
 #include "sway/tree/view.h"
 #include "sway/tree/workspace.h"
+#include "util.h"
+
+#define PREV_WS_LIMIT -1.0f
+#define NEXT_WS_LIMIT 1.0f
 
 #if WLR_HAS_DRM_BACKEND
 #include <wlr/backend/drm.h>
@@ -615,7 +620,8 @@ static int output_repaint_timer_handler(void *data) {
 
 	if (fullscreen_con && fullscreen_con->view && !debug.noscanout
 			// Only output to monitor without compositing when saturation is changed
-			&& fullscreen_con->saturation == 1.0f) {
+			&& fullscreen_con->saturation == 1.0f &&
+			output->workspace_scroll.percent == 0.0f) {
 		// Try to scan-out the fullscreen view
 		static bool last_scanned_out = false;
 		bool scanned_out =
@@ -1114,6 +1120,8 @@ void handle_new_output(struct wl_listener *listener, void *data) {
 	wlr_output_transformed_resolution(output->wlr_output, &width, &height);
 	wlr_damage_ring_set_bounds(&output->damage_ring, width, height);
 	update_output_manager_config(server);
+
+	output->workspace_scroll = workspace_scroll_get_default();
 }
 
 void handle_output_layout_change(struct wl_listener *listener,
@@ -1241,3 +1249,166 @@ void handle_output_power_manager_set_mode(struct wl_listener *listener,
 	oc = store_output_config(oc);
 	apply_output_config(oc, output);
 }
+
+struct workspace_scroll workspace_scroll_get_default() {
+	return (struct workspace_scroll) {
+		.percent = 0,
+		.avg_velocity = 0,
+		.num_updates = 0,
+		.direction = SWIPE_GESTURE_DIRECTION_NONE,
+	};
+}
+
+bool workspace_scroll_equal(struct workspace_scroll *a, struct workspace_scroll *b) {
+	return a->avg_velocity == b->avg_velocity &&
+		a->direction == b->direction &&
+		a->num_updates == b->num_updates &&
+		a->percent == b->percent;
+}
+
+void workspace_scroll_begin(struct sway_seat *seat,
+		enum swipe_gesture_direction direction) {
+	struct sway_workspace *focused_ws = seat_get_focused_workspace(seat);
+	struct sway_output *output = focused_ws->output;
+
+	// Reset the state
+	output->workspace_scroll = workspace_scroll_get_default();
+	output->workspace_scroll.direction = direction;
+
+	output_damage_whole(output);
+	transaction_commit_dirty();
+
+	// Unset focus
+	seat_set_focus_workspace(seat, NULL);
+}
+
+void workspace_scroll_update(struct sway_seat *seat, struct gesture_tracker *tracker,
+		struct wlr_pointer_swipe_update_event *event, int invert) {
+	double delta_sum;
+	enum swipe_gesture_direction direction;
+	switch (tracker->type) {
+	case GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL:
+		direction = SWIPE_GESTURE_DIRECTION_HORIZONTAL;
+		delta_sum = tracker->dx + event->dx * invert;
+		break;
+	case GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL:
+		direction = SWIPE_GESTURE_DIRECTION_VERTICAL;
+		delta_sum = tracker->dy + event->dy * invert;
+		break;
+	default:
+		return;
+	}
+
+	struct sway_workspace *focused_ws = seat_get_focused_workspace(seat);
+	struct sway_output *output = focused_ws->output;
+	struct workspace_scroll *ws_scroll = &output->workspace_scroll;
+
+	if (direction != ws_scroll->direction) {
+		return;
+	}
+
+	int visible_index = list_find(output->workspaces, focused_ws);
+	if (visible_index == -1) {
+		return;
+	}
+
+	// Get the updated average velocity
+	ws_scroll->avg_velocity = fabs(delta_sum) / (++ws_scroll->num_updates);
+	// TODO: Make configurable
+	const int SPEED_FACTOR = 750;
+	double percent = delta_sum / SPEED_FACTOR;
+
+	double min = PREV_WS_LIMIT, max = NEXT_WS_LIMIT;
+	if (!config->workspace_gesture_wrap_around) {
+		// Visualized to the user that this is the last / first workspace by
+		// allowing a small eased swipe, a "Spring effect"
+		double spring_limit = (double) config->workspace_gesture_spring_size /
+			output->width * output->wlr_output->scale;
+		// Make sure that the limit is always smaller than the threshold to
+		// avoid accidental workspace switches
+		double small_threshold = MAX(config->workspace_gesture_threshold - 0.1, 0);
+		spring_limit = MIN(small_threshold, spring_limit);
+		// Limit the percent depending on if the workspace is the first/last or in
+		// the middle somewhere. Uses ease_out to make the limit feel more natural.
+		if (visible_index + 1 >= output->workspaces->length) {
+			max = spring_limit;
+			if (percent > 0) {
+				percent = lerp(0, max, ease_out_cubic(fabs(percent)));
+				min = 0;
+			}
+		}
+		if (visible_index == 0) {
+			min = -spring_limit;
+			if (percent < 0) {
+				percent = lerp(0, min, ease_out_cubic(fabs(percent)));
+				max = 0;
+			}
+		}
+	}
+
+	// Update the tracker data if we aren't exceeding the max swipe limit
+	if (percent < max && percent > min) {
+		tracker->dx += event->dx * invert;
+		tracker->dy += event->dy * invert;
+	}
+
+	ws_scroll->percent = CLAMP(percent, min, max);
+	ws_scroll->direction = direction;
+
+	output_damage_whole(output);
+	transaction_commit_dirty();
+}
+
+void workspace_scroll_end(struct sway_seat *seat) {
+	struct sway_workspace *focused_ws = seat_get_focused_workspace(seat);
+	struct sway_output *output = focused_ws->output;
+	struct workspace_scroll *ws_scroll = &output->workspace_scroll;
+
+	int visible_index = list_find(output->workspaces, focused_ws);
+
+	bool not_edge_ws = config->workspace_gesture_wrap_around;
+	int dir;
+	if (ws_scroll->percent < 0) {
+		dir = PREV_WS_LIMIT;
+		not_edge_ws |= visible_index > 0;
+	} else if (ws_scroll->percent > 0) {
+		dir = NEXT_WS_LIMIT;
+		not_edge_ws |= visible_index + 1 < output->workspaces->length;
+	} else {
+		// Skip setting workspace if the percentage is zero
+		goto reset_state;
+	}
+
+	// TODO: Make configurable
+	const int VELOCITY_NEEDED = 8;
+	// Only switch workspaces when the percent exceeds the threshold or if
+	// the avg_speed exceeds the limit (for fast but short swipes).
+	bool threshold_met = fabs(ws_scroll->percent) >= config->workspace_gesture_threshold;
+	bool enough_velocity = ws_scroll->avg_velocity >= VELOCITY_NEEDED && not_edge_ws;
+	if (!threshold_met && !enough_velocity) {
+		goto reset_state;
+	}
+
+	size_t ws_index = wrap(visible_index + dir, output->workspaces->length);
+	focused_ws = output->workspaces->items[ws_index];
+	sway_log(SWAY_DEBUG, "Switched to workspace: %s\n", focused_ws->name);
+
+reset_state:
+	workspace_scroll_reset(seat, focused_ws);
+}
+
+void workspace_scroll_reset(struct sway_seat *seat, struct sway_workspace *ws) {
+	if (!ws) {
+		ws = seat_get_focused_workspace(seat);
+	}
+	struct sway_output *output = ws->output;
+
+	workspace_switch(ws);
+	seat_consider_warp_to_focus(seat);
+
+	// Reset the state
+	output->workspace_scroll = workspace_scroll_get_default();
+
+	output_damage_whole(output);
+	transaction_commit_dirty();
+}

sway/desktop/render.c

@@ -92,6 +92,83 @@ struct decoration_data get_undecorated_decoration_data() {
 	};
 }
 
+// Adjust the box position when switching the workspace
+static void adjust_box_to_workspace_offset(struct wlr_box *box,
+		bool on_focused_workspace, struct sway_output *output) {
+	float scroll_percent = output->workspace_scroll.percent;
+
+	int ws_dimen;
+	int *box_coord = NULL;
+	switch (output->workspace_scroll.direction) {
+	case SWIPE_GESTURE_DIRECTION_NONE:
+		return;
+	case SWIPE_GESTURE_DIRECTION_HORIZONTAL:
+		ws_dimen = output->width;
+		box_coord = &box->x;
+		break;
+	case SWIPE_GESTURE_DIRECTION_VERTICAL:
+		ws_dimen = output->height;
+		box_coord = &box->y;
+		break;
+	}
+
+	if (box_coord == NULL || ws_dimen == 0) {
+		return;
+	}
+
+	*box_coord -= ws_dimen * scroll_percent;
+	if (!on_focused_workspace) {
+		if (scroll_percent > 0) {
+			*box_coord += ws_dimen;
+		} else if (scroll_percent < 0) {
+			*box_coord -= ws_dimen;
+		}
+	}
+}
+
+// Clips the rendered damage to the workspace region.
+// Fixes containers being rendered across workspaces while switching.
+static void adjust_damage_to_workspace_bounds(pixman_region32_t *damage,
+		bool on_focused_workspace, struct sway_output *output) {
+	float scale = output->wlr_output->scale;
+	float scroll_percent = output->workspace_scroll.percent;
+	int x = 0, y = 0;
+
+	int ws_dimen = 0;
+	int *coord = NULL;
+	switch (output->workspace_scroll.direction) {
+	case SWIPE_GESTURE_DIRECTION_NONE:
+		return;
+	case SWIPE_GESTURE_DIRECTION_HORIZONTAL:
+		ws_dimen = output->width;
+		coord = &x;
+		break;
+	case SWIPE_GESTURE_DIRECTION_VERTICAL:
+		ws_dimen = output->height;
+		coord = &y;
+		break;
+	}
+
+	if (coord == NULL || ws_dimen == 0) {
+		return;
+	}
+
+	*coord = round(-ws_dimen * scroll_percent);
+	if (!on_focused_workspace) {
+		if (scroll_percent > 0) {
+			*coord += ws_dimen;
+		} else if (scroll_percent < 0) {
+			*coord -= ws_dimen;
+		}
+	}
+
+	int width, height;
+	wlr_output_transformed_resolution(output->wlr_output, &width, &height);
+	pixman_region32_intersect_rect(damage, damage,
+			0, 0, width, height);
+	pixman_region32_translate(damage, x * scale, y * scale);
+}
+
 /**
  * Apply scale to a width or height.
  *
@@ -351,6 +428,12 @@ static void render_surface_iterator(struct sway_output *output,
 		clip_box.x = fmax(dst_box.x, data->clip_box->x);
 		clip_box.y = fmax(dst_box.y, data->clip_box->y);
  	}
+
+	if (data->view) {
+		adjust_box_to_workspace_offset(&dst_box, data->on_focused_workspace, output);
+		adjust_box_to_workspace_offset(&clip_box, data->on_focused_workspace, output);
+	}
+
 	scale_box(&dst_box, wlr_output->scale);
 	scale_box(&clip_box, wlr_output->scale);
 
@@ -421,6 +504,7 @@ static void render_layer_iterator(struct sway_output *output,
 static void render_layer_toplevel(struct fx_render_context *ctx, struct wl_list *layer_surfaces) {
 	struct render_data data = {
 		.deco_data = get_undecorated_decoration_data(),
+		.on_focused_workspace = true,
  		.ctx = ctx,
 	};
 	output_layer_for_each_toplevel_surface(ctx->output, layer_surfaces,
@@ -430,6 +514,7 @@ static void render_layer_toplevel(struct fx_render_context *ctx, struct wl_list
  static void render_layer_popups(struct fx_render_context *ctx, struct wl_list *layer_surfaces) {
 	struct render_data data = {
 		.deco_data = get_undecorated_decoration_data(),
+		.on_focused_workspace = true,
 		.ctx = ctx,
 	};
 	output_layer_for_each_popup_surface(ctx->output, layer_surfaces,
@@ -440,6 +525,7 @@ static void render_layer_toplevel(struct fx_render_context *ctx, struct wl_list
 static void render_unmanaged(struct fx_render_context *ctx, struct wl_list *unmanaged) {
 	struct render_data data = {
 		.deco_data = get_undecorated_decoration_data(),
+		.on_focused_workspace = true,
 		.ctx = ctx,
 	};
 	output_unmanaged_for_each_surface(ctx->output, unmanaged,
@@ -450,6 +536,7 @@ static void render_unmanaged(struct fx_render_context *ctx, struct wl_list *unma
 static void render_drag_icons(struct fx_render_context *ctx, struct wl_list *drag_icons) {
 	struct render_data data = {
 		.deco_data = get_undecorated_decoration_data(),
+		.on_focused_workspace = true,
 		.ctx = ctx,
 	};
  	output_drag_icons_for_each_surface(ctx->output, drag_icons,
@@ -548,9 +635,10 @@ void premultiply_alpha(float color[4], float opacity) {
 }
 
 static void render_view_toplevels(struct fx_render_context *ctx,
-		struct sway_view *view, struct decoration_data deco_data) {
+		struct sway_view *view, struct decoration_data deco_data, bool on_focused_workspace) {
 	struct render_data data = {
 		.deco_data = deco_data,
+		.on_focused_workspace = on_focused_workspace,
 		.view = view,
 		.ctx = ctx,
 	};
@@ -598,6 +686,7 @@ static void render_view_popups(struct fx_render_context *ctx, struct sway_view *
 		struct decoration_data deco_data) {
 	struct render_data data = {
 		.deco_data = deco_data,
+		.on_focused_workspace = true,
 		.view = view,
 		.ctx = ctx,
 	};
@@ -700,13 +789,14 @@ static void render_saved_view(struct fx_render_context *ctx, struct sway_view *v
  * Render a view's surface, shadow, and left/bottom/right borders.
  */
 static void render_view(struct fx_render_context *ctx, struct sway_container *con,
-		struct border_colors *colors, struct decoration_data deco_data) {
+		struct border_colors *colors, struct decoration_data deco_data,
+		bool on_focused_workspace) {
 	struct sway_view *view = con->view;
 
 	if (!wl_list_empty(&view->saved_buffers)) {
 		render_saved_view(ctx, view, deco_data);
 	} else if (view->surface) {
-		render_view_toplevels(ctx, view, deco_data);
+		render_view_toplevels(ctx, view, deco_data, on_focused_workspace);
 	}
 
 	struct sway_container_state *state = &con->current;
@@ -725,6 +815,7 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 		box.y = floor(state->y) - ctx->output->ly;
 		box.width = state->width;
 		box.height = state->height;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 		scale_box(&box, output_scale);
 		int shadow_corner_radius = corner_radius == 0 ? 0 : corner_radius + state->border_thickness;
 		float* shadow_color = view_is_urgent(view) || state->focused ?
@@ -748,6 +839,7 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 		box.y = floor(state->content_y);
 		box.width = state->border_thickness;
 		box.height = state->content_height - corner_radius;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 		if (corner_radius && !deco_data.has_titlebar) {
 			box.y += corner_radius;
 			box.height -= corner_radius;
@@ -771,6 +863,7 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 		box.y = floor(state->content_y);
 		box.width = state->border_thickness;
 		box.height = state->content_height - corner_radius;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 		if (corner_radius && !deco_data.has_titlebar) {
 			box.y += corner_radius;
 			box.height -= corner_radius;
@@ -790,6 +883,8 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 		box.y = floor(state->content_y + state->content_height);
 		box.width = state->width;
 		box.height = state->border_thickness;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
+
 		// adjust sizing for rounded border corners
 		if (deco_data.corner_radius) {
 			box.x += corner_radius + state->border_thickness;
@@ -805,6 +900,7 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 			if (state->border_left) {
 				box.x = floor(state->x);
 				box.y = floor(state->y + state->height - size);
+				adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 				box.width = size;
 				box.height = size;
 				scale_box(&box, output_scale);
@@ -814,8 +910,7 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 			if (state->border_right) {
 				box.x = floor(state->x + state->width - size);
 				box.y = floor(state->y + state->height - size);
-				box.width = size;
-				box.height = size;
+				adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 				scale_box(&box, output_scale);
 				render_rounded_border_corner(ctx, &box, color, scaled_corner_radius,
 					scaled_border_thickness, BOTTOM_RIGHT);
@@ -836,7 +931,7 @@ static void render_view(struct fx_render_context *ctx, struct sway_container *co
 static void render_titlebar(struct fx_render_context *ctx, struct sway_container *con,
 		int x, int y, int width, struct border_colors *colors, int corner_radius,
 		enum corner_location corner_location, struct wlr_texture *title_texture,
-		struct wlr_texture *marks_texture) {
+		struct wlr_texture *marks_texture, bool on_focused_workspace) {
 	struct wlr_box box;
 	float color[4];
 	struct sway_output *output = ctx->output;
@@ -868,6 +963,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 			box.width -= corner_radius;
 		}
 	}
+	adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 	scale_box(&box, output_scale);
 	render_rect(ctx, &box, color);
 
@@ -877,6 +973,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.y = y + container_titlebar_height() - titlebar_border_thickness;
 		box.width = width;
 		box.height = titlebar_border_thickness;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 		scale_box(&box, output_scale);
 		render_rect(ctx, &box, color);
 	}
@@ -890,6 +987,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.height -= corner_radius;
 		box.y += corner_radius;
 	}
+	adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 	scale_box(&box, output_scale);
 	render_rect(ctx, &box, color);
 
@@ -902,6 +1000,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.height -= corner_radius;
 		box.y += corner_radius;
 	}
+	adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 	scale_box(&box, output_scale);
 	render_rect(ctx, &box, color);
 
@@ -913,6 +1012,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 			box.y = y;
 			box.width = corner_radius * 2;
 			box.height = corner_radius * 2;
+			adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 			scale_box(&box, output_scale);
 			render_rounded_border_corner(ctx, &box, color, corner_radius,
 					titlebar_border_thickness * output_scale, TOP_LEFT);
@@ -924,6 +1024,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 			box.y = y;
 			box.width = corner_radius * 2;
 			box.height = corner_radius * 2;
+			adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 			scale_box(&box, output_scale);
 			render_rounded_border_corner(ctx, &box, color, corner_radius,
 					titlebar_border_thickness * output_scale, TOP_RIGHT);
@@ -977,6 +1078,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		if (ob_inner_width < clip_box.width) {
 			clip_box.width = ob_inner_width;
 		}
+		adjust_box_to_workspace_offset(&texture_box, on_focused_workspace, output);
 		render_texture(ctx, marks_texture,
 			NULL, &texture_box, &clip_box, WL_OUTPUT_TRANSFORM_NORMAL, deco_data);
 
@@ -987,11 +1089,13 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.y = roundf((y + titlebar_border_thickness) * output_scale);
 		box.width = clip_box.width;
 		box.height = ob_padding_above;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 		render_rect(ctx, &box, color);
 
 		// Padding below
 		box.y += ob_padding_above + clip_box.height;
 		box.height = ob_padding_below + bottom_border_compensation;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 		render_rect(ctx, &box, color);
 	}
 
@@ -1049,6 +1153,8 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 			clip_box.width = ob_inner_width - ob_marks_width;
 		}
 
+		adjust_box_to_workspace_offset(&texture_box, on_focused_workspace, output);
+		adjust_box_to_workspace_offset(&clip_box, on_focused_workspace, output);
 		render_texture(ctx, title_texture,
 			NULL, &texture_box, &clip_box, WL_OUTPUT_TRANSFORM_NORMAL, deco_data);
 
@@ -1059,6 +1165,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.y = roundf((y + titlebar_border_thickness) * output_scale);
 		box.width = clip_box.width;
 		box.height = ob_padding_above;
+		// adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 		render_rect(ctx, &box, color);
 
 		// Padding below
@@ -1098,6 +1205,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.x = ob_left_x + ob_left_width + round(output_x * output_scale);
 		box.y = roundf(bg_y * output_scale);
 		box.height = ob_bg_height + bottom_border_compensation;
+		adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 		render_rect(ctx, &box, color);
 	}
 
@@ -1112,6 +1220,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 	if (box.x + box.width < left_x) {
 		box.width += left_x - box.x - box.width;
 	}
+	adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 	if (corner_radius && (corner_location == TOP_LEFT || corner_location == ALL)) {
 		render_rounded_rect(ctx, &box, color, corner_radius, TOP_LEFT);
 	} else {
@@ -1130,6 +1239,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
 		box.width += box.x - right_rx;
 		box.x = right_rx;
 	}
+	adjust_box_to_workspace_offset(&box, on_focused_workspace, output);
 	if (corner_radius && (corner_location == TOP_RIGHT || corner_location == ALL)) {
 		render_rounded_rect(ctx, &box, color, corner_radius, TOP_RIGHT);
 	} else {
@@ -1141,7 +1251,7 @@ static void render_titlebar(struct fx_render_context *ctx, struct sway_container
  * Render the top border line for a view using "border pixel".
  */
 static void render_top_border(struct fx_render_context *ctx, struct sway_container *con,
-		struct border_colors *colors, int corner_radius) {
+		struct border_colors *colors, int corner_radius, bool on_focused_workspace) {
 	struct sway_container_state *state = &con->current;
 	if (!state->border_top) {
 		return;
@@ -1157,6 +1267,7 @@ static void render_top_border(struct fx_render_context *ctx, struct sway_contain
 	box.y = floor(state->y);
 	box.width = state->width - (2 * corner_radius);
 	box.height = state->border_thickness;
+	adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 	scale_box(&box, output_scale);
 	render_rect(ctx, &box, color);
 
@@ -1167,6 +1278,7 @@ static void render_top_border(struct fx_render_context *ctx, struct sway_contain
 		if (state->border_left) {
 			box.x = floor(state->x);
 			box.y = floor(state->y);
+			adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 			box.width = size;
 			box.height = size;
 			scale_box(&box, output_scale);
@@ -1176,6 +1288,7 @@ static void render_top_border(struct fx_render_context *ctx, struct sway_contain
 		if (state->border_right) {
 			box.x = floor(state->x + state->width - size);
 			box.y = floor(state->y);
+			adjust_box_to_workspace_offset(&box, on_focused_workspace, ctx->output);
 			box.width = size;
 			box.height = size;
 			scale_box(&box, output_scale);
@@ -1191,10 +1304,13 @@ struct parent_data {
 	list_t *children;
 	bool focused;
 	struct sway_container *active_child;
+
+	// Indicates whether the target is on the focused workspace or not.
+	bool on_focused_workspace;
 };
 
 static void render_container(struct fx_render_context *ctx,
-	struct sway_container *con, bool parent_focused);
+	struct sway_container *con, bool parent_focused, bool is_current_ws);
 
 // TODO: no rounding top corners when rendering with titlebar
 /**
@@ -1254,17 +1370,18 @@ static void render_containers_linear(struct fx_render_context *ctx, struct paren
 				.discard_transparent = false,
 				.shadow = child->shadow_enabled,
 			};
-			render_view(ctx, child, colors, deco_data);
+			render_view(ctx, child, colors, deco_data, parent->on_focused_workspace);
 			if (has_titlebar) {
 				render_titlebar(ctx, child, floor(state->x), floor(state->y),
 						state->width, colors, deco_data.corner_radius,
-						ALL, title_texture, marks_texture);
+						ALL, title_texture, marks_texture, parent->on_focused_workspace);
 			} else if (state->border == B_PIXEL) {
-				render_top_border(ctx, child, colors, deco_data.corner_radius);
+				render_top_border(ctx, child, colors, deco_data.corner_radius, parent->on_focused_workspace);
 			}
 		} else {
 			render_container(ctx, child,
-					parent->focused || child->current.focused);
+					parent->focused || child->current.focused,
+					parent->on_focused_workspace);
 		}
 	}
 }
@@ -1359,7 +1476,8 @@ static void render_containers_tabbed(struct fx_render_context *ctx, struct paren
 		}
 
 		render_titlebar(ctx, child, x, parent->box.y, tab_width, colors,
-			corner_radius, corner_location, title_texture, marks_texture);
+			corner_radius, corner_location, title_texture, marks_texture,
+			parent->on_focused_workspace);
 
 		if (child == current) {
 			current_colors = colors;
@@ -1368,10 +1486,12 @@ static void render_containers_tabbed(struct fx_render_context *ctx, struct paren
 
 	// Render surface and left/right/bottom borders
 	if (current->view) {
-		render_view(ctx, current, current_colors, deco_data);
+		render_view(ctx, current, current_colors, deco_data,
+				parent->on_focused_workspace);
 	} else {
 		render_container(ctx, current,
-				parent->focused || current->current.focused);
+				parent->focused || current->current.focused,
+				parent->on_focused_workspace);
 	}
 }
 
@@ -1438,7 +1558,7 @@ static void render_containers_stacked(struct fx_render_context *ctx, struct pare
 		int y = parent->box.y + titlebar_height * i;
 		int corner_radius = i != 0 ? 0 : deco_data.corner_radius;
 		render_titlebar(ctx, child, parent->box.x, y, parent->box.width, colors,
-			corner_radius, ALL, title_texture, marks_texture);
+			corner_radius, ALL, title_texture, marks_texture, parent->on_focused_workspace);
 
 		if (child == current) {
 			current_colors = colors;
@@ -1447,10 +1567,12 @@ static void render_containers_stacked(struct fx_render_context *ctx, struct pare
 
 	// Render surface and left/right/bottom borders
 	if (current->view) {
-		render_view(ctx, current, current_colors, deco_data);
+		render_view(ctx, current, current_colors, deco_data,
+				parent->on_focused_workspace);
 	} else {
 		render_container(ctx, current,
-				parent->focused || current->current.focused);
+				parent->focused || current->current.focused,
+				parent->on_focused_workspace);
 	}
 }
 
@@ -1479,7 +1601,7 @@ static void render_containers(struct fx_render_context *ctx, struct parent_data
 }
 
 static void render_container(struct fx_render_context *ctx,
-		struct sway_container *con, bool focused) {
+		struct sway_container *con, bool focused, bool is_focused_ws) {
 	struct parent_data data = {
 		.layout = con->current.layout,
 		.box = {
@@ -1491,12 +1613,13 @@ static void render_container(struct fx_render_context *ctx,
 		.children = con->current.children,
 		.focused = focused,
 		.active_child = con->current.focused_inactive_child,
+		.on_focused_workspace = is_focused_ws,
 	};
 	render_containers(ctx, &data);
 }
 
 static void render_workspace(struct fx_render_context *ctx,
-		struct sway_workspace *ws, bool focused) {
+		struct sway_workspace *ws, bool focused, bool on_focused_workspace) {
 	struct parent_data data = {
 		.layout = ws->current.layout,
 		.box = {
@@ -1508,12 +1631,13 @@ static void render_workspace(struct fx_render_context *ctx,
 		.children = ws->current.tiling,
 		.focused = focused,
 		.active_child = ws->current.focused_inactive_child,
+		.on_focused_workspace = on_focused_workspace,
 	};
 	render_containers(ctx, &data);
 }
 
 static void render_floating_container(struct fx_render_context *ctx,
-		struct sway_container *con) {
+		struct sway_container *con, bool is_focused_ws) {
 	struct sway_container_state *state = &con->current;
 	if (con->view) {
 		struct sway_view *view = con->view;
@@ -1549,32 +1673,44 @@ static void render_floating_container(struct fx_render_context *ctx,
 			.discard_transparent = false,
 			.shadow = con->shadow_enabled,
 		};
-		render_view(ctx, con, colors, deco_data);
+		render_view(ctx, con, colors, deco_data, is_focused_ws);
 		if (has_titlebar) {
 			render_titlebar(ctx, con, floor(con->current.x), floor(con->current.y), con->current.width,
-					colors, deco_data.corner_radius, ALL, title_texture, marks_texture);
+					colors, deco_data.corner_radius, ALL, title_texture, marks_texture, is_focused_ws);
 		} else if (state->border == B_PIXEL) {
-			render_top_border(ctx, con, colors, deco_data.corner_radius);
+			render_top_border(ctx, con, colors, deco_data.corner_radius, is_focused_ws);
 		}
 	} else {
-		render_container(ctx, con, state->focused);
+		render_container(ctx, con, state->focused, is_focused_ws);
 	}
 }
 
-static void render_floating(struct fx_render_context *ctx) {
+static void render_floating(struct fx_render_context *ctx,
+		struct sway_workspace *other_ws, bool has_fullscreen) {
 	for (int i = 0; i < root->outputs->length; ++i) {
 		struct sway_output *output = root->outputs->items[i];
+
+		// Don't render floating windows across outputs when switching workspaces
+		if (output->workspace_scroll.percent != 0 && output != ctx->output) {
+			continue;
+		}
+
+		struct sway_workspace *visible_ws = output->current.active_workspace;
 		for (int j = 0; j < output->current.workspaces->length; ++j) {
 			struct sway_workspace *ws = output->current.workspaces->items[j];
-			if (!workspace_is_visible(ws)) {
+
+			// Only render affected workspaces
+			if ((ws != other_ws && ws != visible_ws) || 
+					(workspace_is_visible(ws) && has_fullscreen)) {
 				continue;
 			}
+
 			for (int k = 0; k < ws->current.floating->length; ++k) {
 				struct sway_container *floater = ws->current.floating->items[k];
 				if (floater->current.fullscreen_mode != FULLSCREEN_NONE) {
 					continue;
 				}
-				render_floating_container(ctx, floater);
+				render_floating_container(ctx, floater, ws == visible_ws);
 			}
 		}
 	}
@@ -1587,6 +1723,57 @@ static void render_seatops(struct fx_render_context *ctx) {
 	}
 }
 
+static void render_fullscreen_con(struct fx_render_context *ctx,
+		pixman_region32_t *transformed_damage, struct sway_container *fullscreen_con,
+		struct sway_workspace *workspace, bool clear_whole_screen) {
+	struct wlr_output *wlr_output = ctx->output->wlr_output;
+
+	bool on_focused_workspace = workspace == ctx->output->current.active_workspace;
+
+	// Only clear the transformed fullscreen bounds
+	pixman_region32_t dmg;
+	pixman_region32_init(&dmg);
+	if (!clear_whole_screen) {
+		pixman_region32_copy(&dmg, transformed_damage);
+		adjust_damage_to_workspace_bounds(&dmg, on_focused_workspace, ctx->output);
+		transformed_damage = &dmg;
+	}
+
+
+	fx_render_pass_add_rect(ctx->pass, &(struct fx_render_rect_options){
+		.base = {
+			.box = { .width = wlr_output->width, .height = wlr_output->height },
+			.color = { .r = 0, .g = 0, .b = 0, .a = 1 },
+			.clip = transformed_damage,
+		},
+	});
+
+	if (fullscreen_con->view) {
+		struct decoration_data deco_data = get_undecorated_decoration_data();
+		deco_data.saturation = fullscreen_con->saturation;
+		if (!wl_list_empty(&fullscreen_con->view->saved_buffers)) {
+			render_saved_view(ctx, fullscreen_con->view, deco_data);
+		} else if (fullscreen_con->view->surface) {
+			render_view_toplevels(ctx, fullscreen_con->view, deco_data, on_focused_workspace);
+		}
+	} else {
+		render_container(ctx, fullscreen_con, fullscreen_con->current.focused, on_focused_workspace);
+	}
+
+	for (int i = 0; i < workspace->current.floating->length; ++i) {
+		struct sway_container *floater =
+			workspace->current.floating->items[i];
+		if (container_is_transient_for(floater, fullscreen_con)) {
+			render_floating_container(ctx, floater, on_focused_workspace);
+		}
+	}
+#if HAVE_XWAYLAND
+	render_unmanaged(ctx, &root->xwayland_unmanaged);
+#endif
+
+	pixman_region32_fini(&dmg);
+}
+
 void output_render(struct fx_render_context *ctx) {
 	struct wlr_output *wlr_output = ctx->output->wlr_output;
 	struct sway_output *output = ctx->output;
@@ -1599,10 +1786,29 @@ void output_render(struct fx_render_context *ctx) {
 		return;
 	}
 
+	// Get the sibling workspaces
+	struct sway_workspace *other_ws = NULL;
+	if (output->workspace_scroll.percent < 0) {
+		other_ws = workspace_output_prev(workspace,
+				config->workspace_gesture_wrap_around);
+	} else if (output->workspace_scroll.percent > 0) {
+		other_ws = workspace_output_next(workspace,
+				config->workspace_gesture_wrap_around);
+	}
+
 	struct sway_container *fullscreen_con = root->fullscreen_global;
 	if (!fullscreen_con) {
 		fullscreen_con = workspace->current.fullscreen;
 	}
+	// Also check if the sibling workspace has a fullscreen container
+	bool has_fullscreen = fullscreen_con != NULL;
+	bool other_ws_has_fullscreen = false;
+	if (other_ws) {
+		other_ws_has_fullscreen = other_ws->current.fullscreen;
+		if (!has_fullscreen) {
+			has_fullscreen = other_ws_has_fullscreen;
+		}
+	}
 
 	if (!pixman_region32_not_empty(damage)) {
 		// Output isn't damaged but needs buffer swap
@@ -1643,6 +1849,7 @@ void output_render(struct fx_render_context *ctx) {
 		if (server.session_lock.lock != NULL) {
 			struct render_data data = {
 				.deco_data = get_undecorated_decoration_data(),
+				.on_focused_workspace = true,
 				.ctx = ctx,
 			};
 
@@ -1666,37 +1873,9 @@ void output_render(struct fx_render_context *ctx) {
 		goto render_overlay;
 	}
 
-	if (fullscreen_con) {
-		fx_render_pass_add_rect(ctx->pass, &(struct fx_render_rect_options){
-			.base = {
-				.box = { .width = wlr_output->width, .height = wlr_output->height },
-				.color = { .r = 0, .g = 0, .b = 0, .a = 1 },
-				.clip = &transformed_damage,
-			},
-		});
-
-		if (fullscreen_con->view) {
-			struct decoration_data deco_data = get_undecorated_decoration_data();
-			deco_data.saturation = fullscreen_con->saturation;
-			if (!wl_list_empty(&fullscreen_con->view->saved_buffers)) {
-				render_saved_view(ctx, fullscreen_con->view, deco_data);
-			} else if (fullscreen_con->view->surface) {
-				render_view_toplevels(ctx, fullscreen_con->view, deco_data);
-			}
-		} else {
-			render_container(ctx, fullscreen_con, fullscreen_con->current.focused);
-		}
-
-		for (int i = 0; i < workspace->current.floating->length; ++i) {
-			struct sway_container *floater =
-				workspace->current.floating->items[i];
-			if (container_is_transient_for(floater, fullscreen_con)) {
-				render_floating_container(ctx, floater);
-			}
-		}
-#if HAVE_XWAYLAND
-		render_unmanaged(ctx, &root->xwayland_unmanaged);
-#endif
+	if (fullscreen_con && output->workspace_scroll.percent == 0) {
+		// Only draw fullscreen con if not transitioning between workspaces
+		render_fullscreen_con(ctx, &transformed_damage, fullscreen_con, workspace, true);
 	} else {
 		int output_width, output_height;
 		wlr_output_transformed_resolution(wlr_output, &output_width, &output_height);
@@ -1779,8 +1958,16 @@ void output_render(struct fx_render_context *ctx) {
 			fx_render_pass_add_optimized_blur(ctx->pass, &blur_options);
 		}
 
-		render_workspace(ctx, workspace, workspace->current.focused);
-		render_floating(ctx);
+		// Render both workspaces
+		if (!other_ws_has_fullscreen && other_ws) {
+			render_workspace(ctx, other_ws, false, false);
+		}
+		if (!fullscreen_con) {
+			render_workspace(ctx, workspace, workspace->current.focused, true);
+		}
+		render_floating(ctx,
+				!other_ws_has_fullscreen ? other_ws : NULL,
+				fullscreen_con != NULL);
 #if HAVE_XWAYLAND
 		render_unmanaged(ctx, &root->xwayland_unmanaged);
 #endif
@@ -1793,6 +1980,43 @@ void output_render(struct fx_render_context *ctx) {
 			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
 		render_layer_popups(ctx,
 			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
+
+		// Render the fullscreen containers on top
+		if (has_fullscreen) {
+			float clear_color[] = {0.25f, 0.25f, 0.25f, 1.0f};
+			// Render a blank rect next to the fullscreen container if
+			// there's no sibling workspace in the swipes direction
+			if (!other_ws) {
+				struct wlr_box mon_box = { 0, 0, output->width, output->height };
+				adjust_box_to_workspace_offset(&mon_box, false, output);
+				scale_box(&mon_box, output->wlr_output->scale);
+				render_rect(ctx, &mon_box, clear_color);
+
+				// Render a shadow to separate the edge and the fullscreen
+				// container
+				if (config_should_parameters_shadow()) {
+					struct wlr_box shadow_box = { 0, 0, output->width, output->height };
+					adjust_box_to_workspace_offset(&shadow_box, true, output);
+					scale_box(&shadow_box, output->wlr_output->scale);
+					// Render rect to fix minor pixel gaps between fullscreen
+					// container and shadow
+					render_rect(ctx, &shadow_box, clear_color);
+					render_box_shadow(ctx, &shadow_box,
+							config->shadow_color, config->shadow_blur_sigma, 0,
+							0, 0);
+				}
+			} else {
+				// Render sibling fullscreen container
+				struct sway_container *f_con = other_ws->current.fullscreen;
+				if (other_ws->current.fullscreen) {
+					render_fullscreen_con(ctx, &transformed_damage, f_con, other_ws, false);
+				}
+			}
+			// Render focused fullscreen container
+			if (fullscreen_con) {
+				render_fullscreen_con(ctx, &transformed_damage, fullscreen_con, workspace, false);
+			}
+		}
 	}
 
 	render_seatops(ctx);

sway/fx_util/animation_utils.c

@@ -0,0 +1,12 @@
+#include <math.h>
+
+#include "sway/fx_util/animation_utils.h"
+
+double lerp (double a, double b, double t) {
+	return a * (1.0 - t) + b * t;
+}
+
+double ease_out_cubic (double t) {
+	double p = t - 1;
+	return pow(p, 3) + 1;
+}

sway/input/seatop_default.c

@@ -1053,6 +1053,14 @@ static void handle_swipe_begin(struct sway_seat *seat,
 	if (gesture_binding_check(bindings, GESTURE_TYPE_SWIPE, event->fingers, device)) {
 		struct seatop_default_event *seatop = seat->seatop_data;
 		gesture_tracker_begin(&seatop->gestures, GESTURE_TYPE_SWIPE, event->fingers);
+	} else if (gesture_binding_check(bindings, GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL, event->fingers, device)) {
+		struct seatop_default_event *seatop = seat->seatop_data;
+		gesture_tracker_begin(&seatop->gestures, GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL, event->fingers);
+		workspace_scroll_begin(seat, SWIPE_GESTURE_DIRECTION_HORIZONTAL);
+	} else if (gesture_binding_check(bindings, GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL, event->fingers, device)) {
+		struct seatop_default_event *seatop = seat->seatop_data;
+		gesture_tracker_begin(&seatop->gestures, GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL, event->fingers);
+		workspace_scroll_begin(seat, SWIPE_GESTURE_DIRECTION_VERTICAL);
 	} else {
 		// ... otherwise forward to client
 		struct sway_cursor *cursor = seat->cursor;
@@ -1070,6 +1078,29 @@ static void handle_swipe_update(struct sway_seat *seat,
 	if (gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_SWIPE)) {
 		gesture_tracker_update(&seatop->gestures,
 			event->dx, event->dy, NAN, NAN);
+	} else if (gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL) ||
+			gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL)) {
+		// Find the gesture and update the swipe percentage
+		struct gesture_tracker *tracker = &seatop->gestures;
+		struct sway_input_device *device =
+			event->pointer ? event->pointer->base.data : NULL;
+		// Determine name of input that received gesture
+		char *input = device
+			? input_device_get_identifier(device->wlr_device)
+			: strdup("*");
+
+		struct gesture gesture = {
+			.fingers = tracker->fingers,
+			.type = tracker->type,
+			.directions = GESTURE_DIRECTION_NONE,
+		};
+		struct sway_gesture_binding *binding = gesture_binding_match(
+				config->current_mode->gesture_bindings, &gesture, input);
+
+		if (binding) {
+			int invert = binding->flags & BINDING_INVERTED ? 1 : -1;
+			workspace_scroll_update(seat, tracker, event, invert);
+		}
 	} else {
 		// ... otherwise forward to client
 		struct sway_cursor *cursor = seat->cursor;
@@ -1083,13 +1114,17 @@ static void handle_swipe_end(struct sway_seat *seat,
 		struct wlr_pointer_swipe_end_event *event) {
 	// Ensure gesture is being tracked and was not cancelled
 	struct seatop_default_event *seatop = seat->seatop_data;
-	if (!gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_SWIPE)) {
+	if (!gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_SWIPE) &&
+			!gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL) &&
+			!gesture_tracker_check(&seatop->gestures, GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL)) {
 		struct sway_cursor *cursor = seat->cursor;
 		wlr_pointer_gestures_v1_send_swipe_end(server.input->pointer_gestures,
 			cursor->seat->wlr_seat, event->time_msec, event->cancelled);
 		return;
 	}
-	if (event->cancelled) {
+	if (event->cancelled &&
+			seatop->gestures.type != GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL
+			&& seatop->gestures.type != GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL) {
 		gesture_tracker_cancel(&seatop->gestures);
 		return;
 	}
@@ -1101,7 +1136,15 @@ static void handle_swipe_end(struct sway_seat *seat,
 		&seatop->gestures, device);
 
 	if (binding) {
-		gesture_binding_execute(seat, binding);
+		switch (binding->gesture.type) {
+		case GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL:
+		case GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL:
+			workspace_scroll_end(seat);
+			break;
+		default:
+			gesture_binding_execute(seat, binding);
+			break;
+		}
 	}
 }
 
@@ -1117,6 +1160,23 @@ static void handle_rebase(struct sway_seat *seat, uint32_t time_msec) {
 	e->previous_node = node_at_coords(seat,
 			cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
 
+	// Reset the swipe if any other button is pressed during the swipe
+	struct sway_workspace *focused_ws = seat_get_focused_workspace(seat);
+	if (focused_ws) {
+		struct sway_output *output = focused_ws->output;
+		struct workspace_scroll workspace_scroll_default = workspace_scroll_get_default();
+		switch (e->gestures.type) {
+		default:
+			break;
+		case GESTURE_TYPE_WORKSPACE_SWIPE_HORIZONTAL:
+		case GESTURE_TYPE_WORKSPACE_SWIPE_VERTICAL:
+			if (!workspace_scroll_equal(&output->workspace_scroll, &workspace_scroll_default)) {
+				workspace_scroll_reset(seat, NULL);
+			}
+			break;
+		}
+	}
+
 	if (surface) {
 		if (seat_is_input_allowed(seat, surface)) {
 			wlr_seat_pointer_notify_enter(seat->wlr_seat, surface, sx, sy);

sway/meson.build

@@ -24,6 +24,8 @@ sway_sources = files(
 	'desktop/xdg_shell.c',
 	'desktop/launcher.c',
 
+	'fx_util/animation_utils.c',
+
 	'input/input-manager.c',
 	'input/cursor.c',
 	'input/keyboard.c',
@@ -122,7 +124,7 @@ sway_sources = files(
 	'commands/set.c',
 	'commands/shadow_blur_radius.c',
 	'commands/shadow_color.c',
-    'commands/shadow_offset.c',
+	'commands/shadow_offset.c',
 	'commands/shadow_inactive_color.c',
 	'commands/shadows.c',
 	'commands/shadows_on_csd.c',
@@ -144,6 +146,7 @@ sway_sources = files(
 	'commands/unmark.c',
 	'commands/urgent.c',
 	'commands/workspace.c',
+	'commands/workspace_gesture.c',
 	'commands/workspace_layout.c',
 	'commands/ws_auto_back_and_forth.c',
 	'commands/xwayland.c',

sway/server.c

@@ -63,54 +63,61 @@
 #define SWAY_LAYER_SHELL_VERSION 4
 
 #if WLR_HAS_DRM_BACKEND
-static void handle_drm_lease_request(struct wl_listener *listener, void *data) {
+static void handle_drm_lease_request(struct wl_listener *listener, void *data)
+{
 	/* We only offer non-desktop outputs, but in the future we might want to do
 	 * more logic here. */
 
 	struct wlr_drm_lease_request_v1 *req = data;
 	struct wlr_drm_lease_v1 *lease = wlr_drm_lease_request_v1_grant(req);
-	if (!lease) {
+	if (!lease)
+	{
 		sway_log(SWAY_ERROR, "Failed to grant lease request");
 		wlr_drm_lease_request_v1_reject(req);
 	}
 }
 #endif
 
-static bool is_privileged(const struct wl_global *global) {
+static bool is_privileged(const struct wl_global *global)
+{
 #if WLR_HAS_DRM_BACKEND
-	if (server.drm_lease_manager != NULL) {
+	if (server.drm_lease_manager != NULL)
+	{
 		struct wlr_drm_lease_device_v1 *drm_lease_dev;
-		wl_list_for_each(drm_lease_dev, &server.drm_lease_manager->devices, link) {
-			if (drm_lease_dev->global == global) {
+		wl_list_for_each(drm_lease_dev, &server.drm_lease_manager->devices, link)
+		{
+			if (drm_lease_dev->global == global)
+			{
 				return true;
 			}
 		}
 	}
 #endif
 
-	return
-		global == server.output_manager_v1->global ||
-		global == server.output_power_manager_v1->global ||
-		global == server.input_method->global ||
-		global == server.foreign_toplevel_manager->global ||
-		global == server.data_control_manager_v1->global ||
-		global == server.screencopy_manager_v1->global ||
-		global == server.export_dmabuf_manager_v1->global ||
-		global == server.security_context_manager_v1->global ||
-		global == server.gamma_control_manager_v1->global ||
-		global == server.layer_shell->global ||
-		global == server.session_lock.manager->global ||
-		global == server.input->inhibit->global ||
-		global == server.input->keyboard_shortcuts_inhibit->global ||
-		global == server.input->virtual_keyboard->global ||
-		global == server.input->virtual_pointer->global;
+	return global == server.output_manager_v1->global ||
+		   global == server.output_power_manager_v1->global ||
+		   global == server.input_method->global ||
+		   global == server.foreign_toplevel_manager->global ||
+		   global == server.data_control_manager_v1->global ||
+		   global == server.screencopy_manager_v1->global ||
+		   global == server.export_dmabuf_manager_v1->global ||
+		   global == server.security_context_manager_v1->global ||
+		   global == server.gamma_control_manager_v1->global ||
+		   global == server.layer_shell->global ||
+		   global == server.session_lock.manager->global ||
+		   global == server.input->inhibit->global ||
+		   global == server.input->keyboard_shortcuts_inhibit->global ||
+		   global == server.input->virtual_keyboard->global ||
+		   global == server.input->virtual_pointer->global;
 }
 
 static bool filter_global(const struct wl_client *client,
-		const struct wl_global *global, void *data) {
+						  const struct wl_global *global, void *data)
+{
 #if HAVE_XWAYLAND
 	struct wlr_xwayland *xwayland = server.xwayland.wlr_xwayland;
-	if (xwayland && global == xwayland->shell_v1->global) {
+	if (xwayland && global == xwayland->shell_v1->global)
+	{
 		return xwayland->server != NULL && client == xwayland->server->client;
 	}
 #endif
@@ -119,15 +126,17 @@ static bool filter_global(const struct wl_client *client,
 	// TODO: add a way for users to configure an allow-list
 	const struct wlr_security_context_v1_state *security_context =
 		wlr_security_context_manager_v1_lookup_client(
-		server.security_context_manager_v1, (struct wl_client *)client);
-	if (is_privileged(global)) {
+			server.security_context_manager_v1, (struct wl_client *)client);
+	if (is_privileged(global))
+	{
 		return security_context == NULL;
 	}
 
 	return true;
 }
 
-bool server_init(struct sway_server *server) {
+bool server_init(struct sway_server *server)
+{
 	sway_log(SWAY_DEBUG, "Initializing Wayland server");
 	server->wl_display = wl_display_create();
 	server->wl_event_loop = wl_display_get_event_loop(server->wl_display);
@@ -135,37 +144,41 @@ bool server_init(struct sway_server *server) {
 	wl_display_set_global_filter(server->wl_display, filter_global, NULL);
 
 	server->backend = wlr_backend_autocreate(server->wl_display, &server->session);
-	if (!server->backend) {
+	if (!server->backend)
+	{
 		sway_log(SWAY_ERROR, "Unable to create backend");
 		return false;
 	}
 
 	server->renderer = fx_renderer_create(server->backend);
-	if (!server->renderer) {
+	if (!server->renderer)
+	{
 		sway_log(SWAY_ERROR, "Failed to create fx_renderer");
 		return false;
 	}
 
 	wlr_renderer_init_wl_shm(server->renderer, server->wl_display);
 
-	if (wlr_renderer_get_dmabuf_texture_formats(server->renderer) != NULL) {
+	if (wlr_renderer_get_dmabuf_texture_formats(server->renderer) != NULL)
+	{
 		wlr_drm_create(server->wl_display, server->renderer);
 		server->linux_dmabuf_v1 = wlr_linux_dmabuf_v1_create_with_renderer(
 			server->wl_display, 4, server->renderer);
 	}
 
 	server->allocator = wlr_allocator_autocreate(server->backend,
-		server->renderer);
-	if (!server->allocator) {
+												 server->renderer);
+	if (!server->allocator)
+	{
 		sway_log(SWAY_ERROR, "Failed to create allocator");
 		return false;
 	}
 
 	server->compositor = wlr_compositor_create(server->wl_display, 6,
-		server->renderer);
+											   server->renderer);
 	server->compositor_new_surface.notify = handle_compositor_new_surface;
 	wl_signal_add(&server->compositor->events.new_surface,
-		&server->compositor_new_surface);
+				  &server->compositor_new_surface);
 
 	wlr_subcompositor_create(server->wl_display);
 
@@ -176,13 +189,13 @@ bool server_init(struct sway_server *server) {
 		wlr_gamma_control_manager_v1_create(server->wl_display);
 	server->gamma_control_set_gamma.notify = handle_gamma_control_set_gamma;
 	wl_signal_add(&server->gamma_control_manager_v1->events.set_gamma,
-		&server->gamma_control_set_gamma);
+				  &server->gamma_control_set_gamma);
 
 	server->new_output.notify = handle_new_output;
 	wl_signal_add(&server->backend->events.new_output, &server->new_output);
 	server->output_layout_change.notify = handle_output_layout_change;
 	wl_signal_add(&root->output_layout->events.change,
-		&server->output_layout_change);
+				  &server->output_layout_change);
 
 	wlr_xdg_output_manager_v1_create(server->wl_display, root->output_layout);
 
@@ -190,15 +203,15 @@ bool server_init(struct sway_server *server) {
 	sway_idle_inhibit_manager_v1_init();
 
 	server->layer_shell = wlr_layer_shell_v1_create(server->wl_display,
-		SWAY_LAYER_SHELL_VERSION);
+													SWAY_LAYER_SHELL_VERSION);
 	wl_signal_add(&server->layer_shell->events.new_surface,
-		&server->layer_shell_surface);
+				  &server->layer_shell_surface);
 	server->layer_shell_surface.notify = handle_layer_shell_surface;
 
 	server->xdg_shell = wlr_xdg_shell_create(server->wl_display,
-		SWAY_XDG_SHELL_VERSION);
+											 SWAY_XDG_SHELL_VERSION);
 	wl_signal_add(&server->xdg_shell->events.new_surface,
-		&server->xdg_shell_surface);
+				  &server->xdg_shell_surface);
 	server->xdg_shell_surface.notify = handle_xdg_shell_surface;
 
 	server->tablet_v2 = wlr_tablet_v2_create(server->wl_display);
@@ -209,15 +222,15 @@ bool server_init(struct sway_server *server) {
 		server->server_decoration_manager,
 		WLR_SERVER_DECORATION_MANAGER_MODE_SERVER);
 	wl_signal_add(&server->server_decoration_manager->events.new_decoration,
-		&server->server_decoration);
+				  &server->server_decoration);
 	server->server_decoration.notify = handle_server_decoration;
 	wl_list_init(&server->decorations);
 
 	server->xdg_decoration_manager =
 		wlr_xdg_decoration_manager_v1_create(server->wl_display);
 	wl_signal_add(
-			&server->xdg_decoration_manager->events.new_toplevel_decoration,
-			&server->xdg_decoration);
+		&server->xdg_decoration_manager->events.new_toplevel_decoration,
+		&server->xdg_decoration);
 	server->xdg_decoration.notify = handle_xdg_decoration;
 	wl_list_init(&server->xdg_decorations);
 
@@ -228,7 +241,7 @@ bool server_init(struct sway_server *server) {
 		wlr_pointer_constraints_v1_create(server->wl_display);
 	server->pointer_constraint.notify = handle_pointer_constraint;
 	wl_signal_add(&server->pointer_constraints->events.new_constraint,
-		&server->pointer_constraint);
+				  &server->pointer_constraint);
 
 	server->presentation =
 		wlr_presentation_create(server->wl_display, server->backend);
@@ -237,17 +250,17 @@ bool server_init(struct sway_server *server) {
 		wlr_output_manager_v1_create(server->wl_display);
 	server->output_manager_apply.notify = handle_output_manager_apply;
 	wl_signal_add(&server->output_manager_v1->events.apply,
-		&server->output_manager_apply);
+				  &server->output_manager_apply);
 	server->output_manager_test.notify = handle_output_manager_test;
 	wl_signal_add(&server->output_manager_v1->events.test,
-		&server->output_manager_test);
+				  &server->output_manager_test);
 
 	server->output_power_manager_v1 =
 		wlr_output_power_manager_v1_create(server->wl_display);
 	server->output_power_manager_set_mode.notify =
 		handle_output_power_manager_set_mode;
 	wl_signal_add(&server->output_power_manager_v1->events.set_mode,
-		&server->output_power_manager_set_mode);
+				  &server->output_power_manager_set_mode);
 	server->input_method = wlr_input_method_manager_v2_create(server->wl_display);
 	server->text_input = wlr_text_input_manager_v3_create(server->wl_display);
 	server->foreign_toplevel_manager =
@@ -256,13 +269,16 @@ bool server_init(struct sway_server *server) {
 	sway_session_lock_init();
 
 #if WLR_HAS_DRM_BACKEND
-	server->drm_lease_manager=
+	server->drm_lease_manager =
 		wlr_drm_lease_v1_manager_create(server->wl_display, server->backend);
-	if (server->drm_lease_manager) {
+	if (server->drm_lease_manager)
+	{
 		server->drm_lease_request.notify = handle_drm_lease_request;
 		wl_signal_add(&server->drm_lease_manager->events.request,
-				&server->drm_lease_request);
-	} else {
+					  &server->drm_lease_request);
+	}
+	else
+	{
 		sway_log(SWAY_DEBUG, "Failed to create wlr_drm_lease_device_v1");
 		sway_log(SWAY_INFO, "VR will not be available");
 	}
@@ -287,11 +303,11 @@ bool server_init(struct sway_server *server) {
 	server->xdg_activation_v1_request_activate.notify =
 		xdg_activation_v1_handle_request_activate;
 	wl_signal_add(&server->xdg_activation_v1->events.request_activate,
-		&server->xdg_activation_v1_request_activate);
+				  &server->xdg_activation_v1_request_activate);
 	server->xdg_activation_v1_new_token.notify =
 		xdg_activation_v1_handle_new_token;
 	wl_signal_add(&server->xdg_activation_v1->events.new_token,
-		&server->xdg_activation_v1_new_token);
+				  &server->xdg_activation_v1_new_token);
 
 	struct wlr_cursor_shape_manager_v1 *cursor_shape_manager =
 		wlr_cursor_shape_manager_v1_create(server->wl_display, 1);
@@ -302,36 +318,43 @@ bool server_init(struct sway_server *server) {
 
 	// Avoid using "wayland-0" as display socket
 	char name_candidate[16];
-	for (unsigned int i = 1; i <= 32; ++i) {
+	for (unsigned int i = 1; i <= 32; ++i)
+	{
 		snprintf(name_candidate, sizeof(name_candidate), "wayland-%u", i);
-		if (wl_display_add_socket(server->wl_display, name_candidate) >= 0) {
+		if (wl_display_add_socket(server->wl_display, name_candidate) >= 0)
+		{
 			server->socket = strdup(name_candidate);
 			break;
 		}
 	}
 
-	if (!server->socket) {
+	if (!server->socket)
+	{
 		sway_log(SWAY_ERROR, "Unable to open wayland socket");
 		wlr_backend_destroy(server->backend);
 		return false;
 	}
 
 	server->headless_backend = wlr_headless_backend_create(server->wl_display);
-	if (!server->headless_backend) {
+	if (!server->headless_backend)
+	{
 		sway_log(SWAY_ERROR, "Failed to create secondary headless backend");
 		wlr_backend_destroy(server->backend);
 		return false;
-	} else {
+	}
+	else
+	{
 		wlr_multi_backend_add(server->backend, server->headless_backend);
 	}
 
 	struct wlr_output *wlr_output =
-			wlr_headless_add_output(server->headless_backend, 800, 600);
+		wlr_headless_add_output(server->headless_backend, 800, 600);
 	wlr_output_set_name(wlr_output, "FALLBACK");
 	root->fallback_output = output_create(wlr_output);
 
 	// This may have been set already via -Dtxn-timeout
-	if (!server->txn_timeout_ms) {
+	if (!server->txn_timeout_ms)
+	{
 		server->txn_timeout_ms = 200;
 	}
 
@@ -343,7 +366,8 @@ bool server_init(struct sway_server *server) {
 	return true;
 }
 
-void server_fini(struct sway_server *server) {
+void server_fini(struct sway_server *server)
+{
 	// TODO: free sway-specific resources
 #if HAVE_XWAYLAND
 	wlr_xwayland_destroy(server->xwayland.wlr_xwayland);
@@ -353,23 +377,28 @@ void server_fini(struct sway_server *server) {
 	list_free(server->dirty_nodes);
 }
 
-bool server_start(struct sway_server *server) {
+bool server_start(struct sway_server *server)
+{
 #if HAVE_XWAYLAND
-	if (config->xwayland != XWAYLAND_MODE_DISABLED) {
+	if (config->xwayland != XWAYLAND_MODE_DISABLED)
+	{
 		sway_log(SWAY_DEBUG, "Initializing Xwayland (lazy=%d)",
-				config->xwayland == XWAYLAND_MODE_LAZY);
+				 config->xwayland == XWAYLAND_MODE_LAZY);
 		server->xwayland.wlr_xwayland =
 			wlr_xwayland_create(server->wl_display, server->compositor,
-					config->xwayland == XWAYLAND_MODE_LAZY);
-		if (!server->xwayland.wlr_xwayland) {
+								config->xwayland == XWAYLAND_MODE_LAZY);
+		if (!server->xwayland.wlr_xwayland)
+		{
 			sway_log(SWAY_ERROR, "Failed to start Xwayland");
 			unsetenv("DISPLAY");
-		} else {
+		}
+		else
+		{
 			wl_signal_add(&server->xwayland.wlr_xwayland->events.new_surface,
-				&server->xwayland_surface);
+						  &server->xwayland_surface);
 			server->xwayland_surface.notify = handle_xwayland_surface;
 			wl_signal_add(&server->xwayland.wlr_xwayland->events.ready,
-				&server->xwayland_ready);
+						  &server->xwayland_ready);
 			server->xwayland_ready.notify = handle_xwayland_ready;
 
 			setenv("DISPLAY", server->xwayland.wlr_xwayland->display_name, true);
@@ -379,13 +408,15 @@ bool server_start(struct sway_server *server) {
 	}
 #endif
 
-	if (config->primary_selection) {
+	if (config->primary_selection)
+	{
 		wlr_primary_selection_v1_device_manager_create(server->wl_display);
 	}
 
 	sway_log(SWAY_INFO, "Starting backend on wayland display '%s'",
-			server->socket);
-	if (!wlr_backend_start(server->backend)) {
+			 server->socket);
+	if (!wlr_backend_start(server->backend))
+	{
 		sway_log(SWAY_ERROR, "Failed to start backend");
 		wlr_backend_destroy(server->backend);
 		return false;
@@ -394,8 +425,9 @@ bool server_start(struct sway_server *server) {
 	return true;
 }
 
-void server_run(struct sway_server *server) {
+void server_run(struct sway_server *server)
+{
 	sway_log(SWAY_INFO, "Running compositor on wayland display '%s'",
-			server->socket);
+			 server->socket);
 	wl_display_run(server->wl_display);
 }

sway/sway.5.scd

@@ -548,6 +548,61 @@ runtime.
 
 ```
 
+*bindworkspacegesture* [--input-device=<device>] [--no-warn] \
+[--inverted] [<fingers>][:direction]
+	Binds the swipe to switch workspaces in a 1:1 fashion, but only when
+	detected. Optionally can be limited to bind to a certain number of
+	_fingers_ or to certain _directions_.
+
+[[ *type*
+:[ *fingers*
+:< *direction*
+|  swipe
+:  3 - 5
+:  horizontal, vertical
+
+	The _fingers_ can be limited to any sensible number or left empty to accept
+	any finger counts.
+	Valid directions are _horizontal_ and _vertical_.
+
+	If a _input-device_ is given, the binding will only be executed for
+	that input device and will be executed instead of any binding that is
+	generic to all devices. By default, if you overwrite a binding,
+	swaynag will give you a warning. To silence this, use the _--no-warn_ flag.
+
+	If _inverted_ is given, the swipe direction will be reversed.
+
+	The priority for matching bindings is as follows: input device, then
+	exact matches.
+
+	Gestures executed while the pointer is above a bar are not handled by sway.
+	See the respective documentation, e.g. *bindgesture* in *sway-bar*(5).
+
+	Example:
+```
+		# Allow switching between workspaces with left and right swipes
+		bindworkspacegesture 4:horizontal
+		# Allow switching between workspaces with up and down swipes
+		bindworkspacegesture 3:vertical
+		# Allow switching between workspaces with up and down swipes but inverted
+		bindworkspacegesture --inverted 3:vertical
+
+```
+
+*workspace_gesture_spring_size* <value>
+	Adjusts the workspace gestures spring size. Can use values between
+	0 (disabled) and 100 while 50 is the default value.
+
+*workspace_gesture_wrap_around* <enable|disable>
+	Sets whether or not the workspace gesture should wrap around when trying to
+	swipe past the first/last workspace. Disables the
+	_workspace_gesture_spring_size_ config option. Disabled by default.
+
+*workspace_gesture_threshold* <value>
+	Adjusts the swipe threshold of switching workspaces. A lower value makes it
+	easier to switch workspaces. Accepts values between 0.1 (small swipes) and
+	0.9 (large swipes). The default value is set to 0.5.
+
 *client.background* <color>
 	This command is ignored and is only present for i3 compatibility.
 

sway/tree/container.c

@@ -350,11 +350,17 @@ static struct sway_container *view_container_at(struct sway_node *parent,
 	}
 
 	struct sway_container *container = parent->sway_container;
+	
+	int gaps = 0;
+	if (container->current.workspace) {
+		 gaps = container->current.workspace->gaps_inner;
+	}
+	
 	struct wlr_box box = {
-		.x = container->pending.x,
-		.y = container->pending.y,
-		.width = container->pending.width,
-		.height = container->pending.height,
+		.x = container->pending.x - (gaps / 2),
+		.y = container->pending.y - (gaps / 2),
+		.width = container->pending.width + gaps,
+		.height = container->pending.height + gaps,
 	};
 
 	if (wlr_box_contains_point(&box, lx, ly)) {

sway/tree/workspace.c

@@ -354,11 +354,11 @@ struct sway_workspace *workspace_by_name(const char *name) {
 	if (current && strcmp(name, "prev") == 0) {
 		return workspace_prev(current);
 	} else if (current && strcmp(name, "prev_on_output") == 0) {
-		return workspace_output_prev(current);
+		return workspace_output_prev(current, true);
 	} else if (current && strcmp(name, "next") == 0) {
 		return workspace_next(current);
 	} else if (current && strcmp(name, "next_on_output") == 0) {
-		return workspace_output_next(current);
+		return workspace_output_next(current, true);
 	} else if (strcmp(name, "current") == 0) {
 		return current;
 	} else if (strcasecmp(name, "back_and_forth") == 0) {
@@ -521,7 +521,7 @@ struct sway_workspace *workspace_next(struct sway_workspace *workspace) {
  * otherwise the next one is returned.
  */
 static struct sway_workspace *workspace_output_prev_next_impl(
-		struct sway_output *output, int dir) {
+		struct sway_output *output, int dir, bool should_wrap) {
 	struct sway_seat *seat = input_manager_current_seat();
 	struct sway_workspace *workspace = seat_get_focused_workspace(seat);
 	if (!workspace) {
@@ -531,17 +531,27 @@ static struct sway_workspace *workspace_output_prev_next_impl(
 	}
 
 	int index = list_find(output->workspaces, workspace);
-	size_t new_index = wrap(index + dir, output->workspaces->length);
+	size_t new_index;
+	if (!should_wrap) {
+		new_index = index += dir;
+		if (index < 0 || index >= output->workspaces->length) {
+			return NULL;
+		}
+	} else {
+		new_index = wrap(index + dir, output->workspaces->length);
+	}
 	return output->workspaces->items[new_index];
 }
 
 
-struct sway_workspace *workspace_output_next(struct sway_workspace *current) {
-	return workspace_output_prev_next_impl(current->output, 1);
+struct sway_workspace *workspace_output_next(struct sway_workspace *current,
+		bool should_wrap) {
+	return workspace_output_prev_next_impl(current->output, 1, should_wrap);
 }
 
-struct sway_workspace *workspace_output_prev(struct sway_workspace *current) {
-	return workspace_output_prev_next_impl(current->output, -1);
+struct sway_workspace *workspace_output_prev(struct sway_workspace *current,
+		bool should_wrap) {
+	return workspace_output_prev_next_impl(current->output, -1, should_wrap);
 }
 
 struct sway_workspace *workspace_auto_back_and_forth(
@@ -571,6 +581,7 @@ bool workspace_switch(struct sway_workspace *workspace) {
 
 	sway_log(SWAY_DEBUG, "Switching to workspace %p:%s",
 		workspace, workspace->name);
+	workspace->output->workspace_scroll = workspace_scroll_get_default();
 	struct sway_node *next = seat_get_focus_inactive(seat, &workspace->node);
 	if (next == NULL) {
 		next = &workspace->node;