Add support for gaps option

6 files changed, 63 insertions, 10 deletions

diff --git a/include/config.h b/include/config.h
index 9243bf35..c47eb683 100644
--- a/include/config.h
+++ b/include/config.h
@@ -41,6 +41,9 @@ struct sway_config {
         bool active;
         bool failed;
         bool reloading;
+
+        int gaps_inner;
+        int gaps_outer;
 };
 
 bool load_config(void);
diff --git a/include/container.h b/include/container.h
index 186ee8b6..6d64b490 100644
--- a/include/container.h
+++ b/include/container.h
@@ -48,6 +48,8 @@ struct sway_container {
 
         char *name;
 
+        int gaps;
+
         list_t *children;
         list_t *floating;
 
diff --git a/sway/commands.c b/sway/commands.c
index 51de7a50..f716efa3 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -3,6 +3,7 @@
 #include <wlc/wlc.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <errno.h>
 #include <string.h>
 #include <unistd.h>
 #include <ctype.h>
@@ -281,6 +282,44 @@ static bool cmd_focus_follows_mouse(struct sway_config *config, int argc, char *
         return true;
 }
 
+static bool cmd_gaps(struct sway_config *config, int argc, char **argv) {
+        if (!checkarg(argc, "gaps", EXPECTED_AT_LEAST, 1)) {
+                return false;
+        }
+
+        if (argc == 1) {
+                char *end;
+                int amount = (int)strtol(argv[0], &end, 10);
+                if (errno == ERANGE || amount == 0) {
+                        errno = 0;
+                        return false;
+                }
+                if (config->gaps_inner == 0) {
+                        config->gaps_inner = amount;
+                }
+                if (config->gaps_outer == 0) {
+                        config->gaps_outer = amount;
+                }
+        } else if (argc == 2) {
+                char *end;
+                int amount = (int)strtol(argv[1], &end, 10);
+                if (errno == ERANGE || amount == 0) {
+                        errno = 0;
+                        return false;
+                }
+                if (strcmp(argv[0], "inner") == 0) {
+                        config->gaps_inner = amount;
+                } else if (strcmp(argv[0], "outer") == 0) {
+                        config->gaps_outer = amount;
+                } else {
+                        return false;
+                }
+        } else {
+                return false;
+        }
+        return true;
+}
+
 static bool cmd_kill(struct sway_config *config, int argc, char **argv) {
         swayc_t *view = get_focused_container(&root_container);
         wlc_view_close(view->handle);
@@ -484,6 +523,7 @@ static struct cmd_handler handlers[] = {
         { "focus", cmd_focus },
         { "focus_follows_mouse", cmd_focus_follows_mouse },
         { "fullscreen", cmd_fullscreen },
+        { "gaps", cmd_gaps },
         { "kill", cmd_kill },
         { "layout", cmd_layout },
         { "log_colors", cmd_log_colors },
diff --git a/sway/config.c b/sway/config.c
index 6d39839d..b0b66315 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -170,6 +170,8 @@ void config_defaults(struct sway_config *config) {
         config->reloading = false;
         config->active = false;
         config->failed = false;
+        config->gaps_inner = 0;
+        config->gaps_outer = 0;
 }
 
 bool read_config(FILE *file, bool is_active) {
diff --git a/sway/container.c b/sway/container.c
index e679e823..68511156 100644
--- a/sway/container.c
+++ b/sway/container.c
@@ -43,8 +43,10 @@ swayc_t *new_output(wlc_handle handle) {
         sway_log(L_DEBUG, "Added output %lu:%s", handle, name);
 
         swayc_t *output = new_swayc(C_OUTPUT);
-        output->width = size->w;
-        output->height = size->h;
+        output->x = (config->gaps_outer + config->gaps_inner) / 2;
+        output->y = (config->gaps_outer + config->gaps_inner) / 2;
+        output->width = size->w - (config->gaps_outer + config->gaps_inner);
+        output->height = size->h - (config->gaps_outer + config->gaps_inner);
         output->handle = handle;
         output->name = name ? strdup(name) : NULL;
 
@@ -81,6 +83,8 @@ swayc_t *new_workspace(swayc_t *output, const char *name) {
         swayc_t *workspace = new_swayc(C_WORKSPACE);
 
         workspace->layout = L_HORIZ; // TODO: default layout
+        workspace->x = output->x;
+        workspace->y = output->y;
         workspace->width = output->width;
         workspace->height = output->height;
         workspace->name = strdup(name);
@@ -143,6 +147,8 @@ swayc_t *new_view(swayc_t *sibling, wlc_handle handle) {
         view->visible = true;
         view->is_focused = true;
 
+        view->gaps = config->gaps_inner;
+
         view->desired_width = -1;
         view->desired_height = -1;
 
diff --git a/sway/layout.c b/sway/layout.c
index e2ea46a7..737477f7 100644
--- a/sway/layout.c
+++ b/sway/layout.c
@@ -133,12 +133,12 @@ void arrange_windows(swayc_t *container, int width, int height) {
                 {
                         struct wlc_geometry geometry = {
                                 .origin = {
-                                        .x = container->x,
-                                        .y = container->y
+                                        .x = container->x + container->gaps / 2,
+                                        .y = container->y + container->gaps / 2
                                 },
                                 .size = {
-                                        .w = width,
-                                        .h = height
+                                        .w = width - container->gaps,
+                                        .h = height - container->gaps
                                 }
                         };
                         if (wlc_view_get_state(container->handle) & WLC_BIT_FULLSCREEN) {
@@ -146,10 +146,10 @@ void arrange_windows(swayc_t *container, int width, int height) {
                                 while (parent->type != C_OUTPUT) {
                                         parent = parent->parent;
                                 }
-                                geometry.origin.x = 0;
-                                geometry.origin.y = 0;
-                                geometry.size.w = parent->width;
-                                geometry.size.h = parent->height;
+                                geometry.origin.x = container->gaps / 2;
+                                geometry.origin.y = container->gaps / 2;
+                                geometry.size.w = parent->width - container->gaps;
+                                geometry.size.h = parent->height - container->gaps;
                                 wlc_view_set_geometry(container->handle, &geometry);
                                 wlc_view_bring_to_front(container->handle);
                         } else {