Add support for workspace_min_width bar option.

include/sway/commands.h

@@ -228,6 +228,7 @@ sway_cmd bar_cmd_unbindcode;
 sway_cmd bar_cmd_unbindsym;
 sway_cmd bar_cmd_wrap_scroll;
 sway_cmd bar_cmd_workspace_buttons;
+sway_cmd bar_cmd_workspace_min_width;
 
 sway_cmd bar_colors_cmd_active_workspace;
 sway_cmd bar_colors_cmd_background;

include/sway/config.h

@@ -320,6 +320,7 @@ struct bar_config {
 	struct side_gaps gaps;
 	int status_padding;
 	int status_edge_padding;
+	uint32_t workspace_min_width;
 	struct {
 		char *background;
 		char *statusline;

include/swaybar/config.h

@@ -38,6 +38,7 @@ struct swaybar_config {
 	bool binding_mode_indicator;
 	bool wrap_scroll;
 	bool workspace_buttons;
+	uint32_t workspace_min_width;
 	list_t *bindings;
 	struct wl_list outputs; // config_output::link
 	int height;

sway/commands/bar.c

@@ -36,6 +36,7 @@ static struct cmd_handler bar_handlers[] = {
 	{ "unbindcode", bar_cmd_unbindcode },
 	{ "unbindsym", bar_cmd_unbindsym },
 	{ "workspace_buttons", bar_cmd_workspace_buttons },
+	{ "workspace_min_width", bar_cmd_workspace_min_width },
 	{ "wrap_scroll", bar_cmd_wrap_scroll },
 };
 

sway/commands/bar/workspace_min_width.c

@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <strings.h>
+#include "config.h"
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "log.h"
+
+struct cmd_results *bar_cmd_workspace_min_width(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "workspace_min_width", EXPECTED_AT_LEAST, 1))) {
+		return error;
+	}
+
+	struct bar_config *bar = config->current_bar;
+
+	char *end;
+	int min_width = strtol(argv[0], &end, 10);
+	if (min_width < 0 || (*end != '\0' && strcasecmp(end, "px") != 0)) {
+		return cmd_results_new(CMD_INVALID,
+				"[Bar %s] Invalid minimum workspace button width value: %s",
+				bar->id, argv[0]);
+	}
+
+	if (argc == 2 && strcasecmp(argv[1], "px") != 0) {
+		return cmd_results_new(CMD_INVALID,
+				"Expected 'workspace_min_width <px> [px]'");
+	}
+
+	sway_log(SWAY_DEBUG, "[Bar %s] Setting minimum workspace button width to %d",
+			bar->id, min_width);
+	config->current_bar->workspace_min_width = min_width;
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}

sway/config/bar.c

@@ -105,6 +105,7 @@ struct bar_config *default_bar_config(void) {
 	bar->modifier = get_modifier_mask_by_name("Mod4");
 	bar->status_padding = 1;
 	bar->status_edge_padding = 3;
+	bar->workspace_min_width = 0;
 	if (!(bar->mode = strdup("dock"))) {
 	       goto cleanup;
 	}

sway/ipc-json.c

@@ -1102,6 +1102,8 @@ json_object *ipc_json_describe_bar_config(struct bar_config *bar) {
 			json_object_new_boolean(bar->strip_workspace_numbers));
 	json_object_object_add(json, "strip_workspace_name",
 			json_object_new_boolean(bar->strip_workspace_name));
+	json_object_object_add(json, "workspace_min_width",
+			json_object_new_int(bar->workspace_min_width));
 	json_object_object_add(json, "binding_mode_indicator",
 			json_object_new_boolean(bar->binding_mode_indicator));
 	json_object_object_add(json, "verbose",

sway/meson.build

@@ -144,6 +144,7 @@ sway_sources = files(
 	'commands/bar/tray_output.c',
 	'commands/bar/tray_padding.c',
 	'commands/bar/workspace_buttons.c',
+	'commands/bar/workspace_min_width.c',
 	'commands/bar/wrap_scroll.c',
 
 	'commands/input/accel_profile.c',

sway/sway-bar.5.scd

@@ -138,6 +138,11 @@ runtime.
 *workspace_buttons* yes|no
 	Enables or disables workspace buttons on the bar. Default is _yes_.
 
+*workspace_min_width* <px> [px]
+	Specifies the minimum width for the workspace buttons on the bar. Default is _0_.
+
+	This setting also applies to the current binding mode indicator.
+
 ## TRAY
 
 Swaybar provides a system tray where third-party applications may place icons.

sway/sway-ipc.7.scd

@@ -829,6 +829,9 @@ their value mean can be found in *sway-bar*(5):
 |- workspace_buttons
 :  boolean
 :  Whether to display the workspace buttons on the bar
+|- workspace_min_width
+:  integer
+:  Minimum width in px for the workspace buttons on the bar
 |- binding_mode_indicator
 :  boolean
 :  Whether to display the current binding mode on the bar
@@ -931,6 +934,7 @@ containing the _#RRGGBBAA_ representation of the color:
 	"status_padding": 1,
 	"status_edge_padding": 3,
 	"workspace_buttons": true,
+	"workspace_min_width": 0,
 	"binding_mode_indicator": true,
 	"verbose": false,
 	"pango_markup": false,

swaybar/config.c

@@ -35,6 +35,7 @@ struct swaybar_config *init_config(void) {
 	config->binding_mode_indicator = true;
 	config->wrap_scroll = false;
 	config->workspace_buttons = true;
+	config->workspace_min_width = 0;
 	config->bindings = create_list();
 	wl_list_init(&config->outputs);
 	config->status_padding = 1;

swaybar/ipc.c

@@ -270,6 +270,12 @@ static bool ipc_parse_config(
 		config->workspace_buttons = json_object_get_boolean(workspace_buttons);
 	}
 
+	json_object *workspace_min_width =
+		json_object_object_get(bar_config, "workspace_min_width");
+	if (workspace_min_width) {
+		config->workspace_min_width = json_object_get_int(workspace_min_width);
+	}
+
 	json_object *wrap_scroll = json_object_object_get(bar_config, "wrap_scroll");
 	if (wrap_scroll) {
 		config->wrap_scroll = json_object_get_boolean(wrap_scroll);

swaybar/render.c

@@ -402,7 +402,11 @@ static uint32_t predict_workspace_button_length(cairo_t *cairo,
 		return 0;
 	}
 
-	return ws_horizontal_padding * 2 + text_width + border_width * 2;
+	uint32_t width = text_width + ws_horizontal_padding * 2 + border_width * 2;
+	if (width < config->workspace_min_width * output->scale) {
+		width = config->workspace_min_width * output->scale;
+	}
+	return width;
 }
 
 static uint32_t predict_workspace_buttons_length(cairo_t *cairo,
@@ -446,7 +450,11 @@ static uint32_t predict_binding_mode_indicator_length(cairo_t *cairo,
 			output->height < ideal_surface_height) {
 		return 0;
 	}
-	return text_width + ws_horizontal_padding * 2 + border_width * 2;
+	uint32_t width = text_width + ws_horizontal_padding * 2 + border_width * 2;
+	if (width < config->workspace_min_width * output->scale) {
+		width = config->workspace_min_width * output->scale;
+	}
+	return width;
 }
 
 static uint32_t render_status_line_i3bar(cairo_t *cairo,
@@ -518,6 +526,9 @@ static uint32_t render_binding_mode_indicator(cairo_t *cairo,
 		return ideal_surface_height;
 	}
 	uint32_t width = text_width + ws_horizontal_padding * 2 + border_width * 2;
+	if (width < config->workspace_min_width * output->scale) {
+		width = config->workspace_min_width * output->scale;
+	}
 
 	uint32_t height = output->height * output->scale;
 	cairo_set_source_u32(cairo, config->colors.binding_mode.background);
@@ -585,7 +596,10 @@ static uint32_t render_workspace_button(cairo_t *cairo,
 		return ideal_surface_height;
 	}
 
-	uint32_t width = ws_horizontal_padding * 2 + text_width + border_width * 2;
+	uint32_t width = text_width + ws_horizontal_padding * 2 + border_width * 2;
+	if (width < config->workspace_min_width * output->scale) {
+		width = config->workspace_min_width * output->scale;
+	}
 
 	cairo_set_source_u32(cairo, box_colors.background);
 	cairo_rectangle(cairo, *x, 0, width, height);