Made layer_effects syntax similar to the for_window command

Example: `layer_effects "waybar" blur on; shadows on; corner_radius 6`.

README.md

@@ -32,7 +32,12 @@ Sway is an incredible window manager, and certainly one of the most well establi
     - `blur_passes <integer value 0 - 10>`
     - `blur_radius <integer value 0 - 10>`
 + LayerShell effects: *ONLY ON SWAYFX-GIT, NOT YET RELEASED*
-    - `layer_effects <layer namespace, eg: "waybar"> blur shadow corner_radius`
+    - `layer_effects <layer namespace> <effects>`
+    - Example: `layer_effects "waybar" blur enable; shadows enable; corner_radius 6`
+    - Available Effects:
+        - `blur <enable|disable>`
+        - `shadows <enable|disable>`
+        - `corner_radius <int>`
 + Dim unfocused windows:
     - `default_dim_inactive <float value 0.0 - 1.0>`
     - `for_window [CRITERIA_HERE] dim_inactive <float value 0.0 - 1.0>`

include/sway/commands.h

@@ -97,6 +97,13 @@ void container_resize_tiled(struct sway_container *parent, uint32_t axis,
 struct sway_container *container_find_resize_parent(struct sway_container *con,
 		uint32_t edge);
 
+/**
+ * Effect handlers value parsers
+ */
+bool cmd_blur_parse_value(char *arg);
+bool cmd_corner_radius_parse_value(char *arg, int* result);
+bool cmd_shadows_parse_value(char *arg);
+
 /**
  * Handlers shared by exec and exec_always.
  */

include/sway/config.h

@@ -12,6 +12,7 @@
 #include "../include/config.h"
 #include "gesture.h"
 #include "list.h"
+#include "sway/desktop/fx_renderer/fx_renderer.h"
 #include "swaynag.h"
 #include "tree/container.h"
 #include "sway/input/tablet.h"
@@ -477,9 +478,7 @@ struct blur_parameters {
 
 struct layer_effects {
 	char *namespace;
-	bool blur;
-	bool shadow;
-	bool corner_rounding;
+	struct decoration_data deco_data;
 };
 
 /**

include/sway/desktop/fx_renderer/fx_renderer.h

@@ -9,6 +9,18 @@
 #include "sway/desktop/fx_renderer/fx_framebuffer.h"
 #include "sway/desktop/fx_renderer/fx_texture.h"
 
+#define get_undecorated_decoration_data() \
+	(struct decoration_data) { \
+		.alpha = 1.0f, \
+		.dim = 0.0f, \
+		.dim_color = config->dim_inactive_colors.unfocused, \
+		.corner_radius = 0, \
+		.saturation = 1.0f, \
+		.has_titlebar = false, \
+		.blur = false, \
+		.shadow = false, \
+	}
+
 enum corner_location { TOP_LEFT, TOP_RIGHT, BOTTOM_RIGHT, BOTTOM_LEFT, ALL, NONE };
 
 enum fx_tex_shader_source {

sway/commands/blur.c

@@ -3,6 +3,10 @@
 #include "sway/output.h"
 #include "util.h"
 
+bool cmd_blur_parse_value(char *arg) {
+	return parse_boolean(arg, true);
+}
+
 struct cmd_results *cmd_blur(int argc, char **argv) {
 	struct cmd_results *error = checkarg(argc, "blur", EXPECTED_AT_LEAST, 1);
 
@@ -12,7 +16,7 @@ struct cmd_results *cmd_blur(int argc, char **argv) {
 
 	struct sway_container *con = config->handler_context.container;
 
-	bool result = parse_boolean(argv[0], config->blur_enabled);
+	bool result = cmd_blur_parse_value(argv[0]);
 	if (con == NULL) {
 		config->blur_enabled = result;
 	} else {

sway/commands/corner_radius.c

@@ -4,15 +4,24 @@
 #include "sway/tree/container.h"
 #include "log.h"
 
+bool cmd_corner_radius_parse_value(char *arg, int* result) {
+	char *inv;
+	int value = strtol(arg, &inv, 10);
+	if (*inv != '\0' || value < 0 || value > 99) {
+		return false;
+	}
+	*result = value;
+	return true;
+}
+
 struct cmd_results *cmd_corner_radius(int argc, char **argv) {
 	struct cmd_results *error = NULL;
 	if ((error = checkarg(argc, "corner_radius", EXPECTED_EQUAL_TO, 1))) {
 		return error;
 	}
 
-	char *inv;
-	int value = strtol(argv[0], &inv, 10);
-	if (*inv != '\0' || value < 0 || value > 99) {
+	int value = 0;
+	if (!cmd_corner_radius_parse_value(argv[0], &value)) {
 		return cmd_results_new(CMD_FAILURE, "Invalid size specified");
 	}
 

sway/commands/layer_effects.c

@@ -1,8 +1,59 @@
+#include <ctype.h>
+#include "log.h"
+#include "stringop.h"
 #include "sway/commands.h"
 #include "sway/config.h"
 #include "sway/output.h"
 #include "util.h"
 
+struct cmd_results *parse_effects(int argc, char **argv, struct layer_effects *effect) {
+	char matched_delim = ';';
+	char *head = join_args(argv + 1, argc - 1);
+	do {
+		// Trim leading whitespaces
+		for (; isspace(*head); ++head) {}
+		// Split command list
+		char *cmd = argsep(&head, ";,", &matched_delim);
+		for (; isspace(*cmd); ++cmd) {}
+
+		if (strcmp(cmd, "") == 0) {
+			sway_log(SWAY_INFO, "Ignoring empty layer effect.");
+			continue;
+		}
+		sway_log(SWAY_INFO, "Handling layer effect '%s'", cmd);
+
+		int argc;
+		char **argv = split_args(cmd, &argc);
+		// Strip all quotes from each token
+		for (int i = 1; i < argc; ++i) {
+			if (*argv[i] == '\"' || *argv[i] == '\'') {
+				strip_quotes(argv[i]);
+			}
+		}
+		if (strcmp(argv[0], "blur") == 0) {
+			effect->deco_data.blur = cmd_blur_parse_value(argv[1]);
+			continue;
+		} else if (strcmp(argv[0], "shadows") == 0) {
+			effect->deco_data.shadow = cmd_shadows_parse_value(argv[1]);
+			continue;
+		} else if (strcmp(argv[0], "corner_radius") == 0) {
+			int value;
+			if (cmd_corner_radius_parse_value(argv[1], &value)) {
+				effect->deco_data.corner_radius = value;
+				continue;
+			}
+			return cmd_results_new(CMD_INVALID,
+					"Invalid layer_effects corner_radius size! Got \"%s\"",
+					argv[1]);
+		} else {
+			return cmd_results_new(CMD_INVALID,
+					"Invalid layer_effects effect! Got \"%s\"",
+					cmd);
+		}
+	} while(head);
+	return NULL;
+}
+
 struct cmd_results *cmd_layer_effects(int argc, char **argv) {
 	struct cmd_results *error = NULL;
 	if ((error = checkarg(argc, "layer_effects", EXPECTED_AT_LEAST, 2))) {
@@ -13,27 +64,21 @@ struct cmd_results *cmd_layer_effects(int argc, char **argv) {
 	size_t len = sizeof(argv[0]);
 	effect->namespace = malloc(len + 1);
 	memcpy(effect->namespace, argv[0], len);
-	effect->blur = false;
-	effect->shadow = false;
-	effect->corner_rounding = false;
+	effect->deco_data = get_undecorated_decoration_data();
 
 	// Parse the commands
-	for (int i = 1; i < argc; i++) {
-		char *arg = argv[i];
-		if (strcmp(arg, "blur") == 0) {
-			effect->blur = true;
-			continue;
-		} else if (strcmp(arg, "shadow") == 0) {
-			effect->shadow = true;
-			continue;
-		} else if (strcmp(arg, "corner_rounding") == 0) {
-			effect->corner_rounding = true;
-			continue;
-		}
-		return cmd_results_new(CMD_INVALID, "Invalid layer_effects effect! Got \"%s\"", arg);
+	if ((error = parse_effects(argc, argv, effect))) {
+		return error;
 	}
 
-	if (!effect->blur && !effect->shadow && !effect->corner_rounding) {
+	// Ignore if nothing has changed
+	// TODO: Add deco_data cmp function?
+	if (!effect->deco_data.blur
+			&& !effect->deco_data.shadow
+			&& effect->deco_data.corner_radius < 1) {
+		sway_log(SWAY_ERROR,
+				"Ignoring layer effect \"%s\". Nothing changed\n",
+				join_args(argv + 1, argc - 1));
 		return cmd_results_new(CMD_SUCCESS, NULL);
 	}
 

sway/commands/shadows.c

@@ -8,6 +8,10 @@
 #include "stringop.h"
 #include "util.h"
 
+bool cmd_shadows_parse_value(char *arg) {
+	return parse_boolean(arg, true);
+}
+
 struct cmd_results *cmd_shadows(int argc, char **argv) {
 	struct cmd_results *error = checkarg(argc, "shadows", EXPECTED_AT_LEAST, 1);
 
@@ -17,7 +21,7 @@ struct cmd_results *cmd_shadows(int argc, char **argv) {
 
 	struct sway_container *con = config->handler_context.container;
 
-	bool result = parse_boolean(argv[0], config->shadow_enabled);
+	bool result = cmd_shadows_parse_value(argv[0]);
 	if (con == NULL) {
 		config->shadow_enabled = result;
 	} else {

sway/desktop/output.c

@@ -200,11 +200,8 @@ void output_layer_for_each_toplevel_surface(struct sway_output *output,
 		struct wlr_layer_surface_v1 *wlr_layer_surface_v1 =
 			layer_surface->layer_surface;
 		struct render_data *data = user_data;
-		struct layer_effects *effects = layer_surface->effects;
-		if (effects) {
-			data->deco_data.blur = effects->blur;
-			data->deco_data.shadow = effects->shadow;
-			data->deco_data.corner_radius = effects->corner_rounding? config->corner_radius: 0;
+		if (layer_surface->effects) {
+			data->deco_data = layer_surface->effects->deco_data;
 		}
 
 		output_surface_for_each_surface(output, wlr_layer_surface_v1->surface,

sway/desktop/render.c

@@ -39,19 +39,6 @@ struct workspace_effect_info {
 	int expanded_size;
 };
 
-struct decoration_data get_undecorated_decoration_data() {
-	return (struct decoration_data) {
-		.alpha = 1.0f,
-		.dim = 0.0f,
-		.dim_color = config->dim_inactive_colors.unfocused,
-		.corner_radius = 0,
-		.saturation = 1.0f,
-		.has_titlebar = false,
-		.blur = false,
-		.shadow = false,
-	};
-}
-
 int get_blur_size() {
 	return pow(2, config->blur_params.num_passes) * config->blur_params.radius;
 }
@@ -1865,14 +1852,14 @@ static struct workspace_effect_info get_workspace_effect_info(struct sway_output
 		wl_list_for_each(lsurface, &sway_output->layers[i], link) {
 			struct layer_effects *layer_effects = lsurface->effects;
 			if (layer_effects) {
-				if (layer_effects->blur && !lsurface->layer_surface->surface->opaque) {
+				if (layer_effects->deco_data.blur && !lsurface->layer_surface->surface->opaque) {
 					effect_info.container_wants_blur = true;
 					// Check if we should render optimized blur
 					if (renderer->blur_buffer_dirty && config->blur_xray) {
 						effect_info.should_render_optimized_blur = true;
 					}
 				}
-				if (layer_effects->shadow) {
+				if (layer_effects->deco_data.shadow) {
 					effect_info.container_wants_shadow = true;
 				}
 			}

sway/ipc-json.c

@@ -376,14 +376,14 @@ static void ipc_json_describe_enabled_output(struct sway_output *output,
 			json_object *effects = json_object_new_array();
 			struct layer_effects *layer_effects = lsurface->effects;
 			if (layer_effects) {
-				if (layer_effects->blur) {
+				if (layer_effects->deco_data.blur) {
 					json_object_array_add(effects, json_object_new_string("blur"));
 				}
-				if (layer_effects->shadow) {
-					json_object_array_add(effects, json_object_new_string("shadow"));
+				if (layer_effects->deco_data.shadow) {
+					json_object_array_add(effects, json_object_new_string("shadows"));
 				}
-				if (layer_effects->corner_rounding) {
-					json_object_array_add(effects, json_object_new_string("corner_rounding"));
+				if (layer_effects->deco_data.corner_radius > 0) {
+					json_object_array_add(effects, json_object_new_string("corner_radius"));
 				}
 			}
 			json_object_object_add(layer, "effects", effects);

sway/sway.5.scd

@@ -78,9 +78,13 @@ The following commands may only be used in the configuration file.
 	layers can use these effects.
 
 	Effects:
-	- *blur*
-	- *shadow*
-	- *corner_rounding*
+	- *blur* <enable|disable>
+	- *shadows* <enable|disable>
+	- *corner_radius* <integer>
+
+	Example:
+
+		layer_effects "waybar" blur enable; shadows enable; corner_radius 6
 
 *scratchpad_minimize* enable|disable
 	Adjusts if minimized windows should be moved into the scratchpad.