feat(i3wm): rounded corners

docs/ipc

@@ -377,6 +377,8 @@ type (string)::
 border (string)::
 	Can be either "normal", "none" or "pixel", depending on the
 	container’s border style.
+border_radius (integer)::
+	Number of pixels of the border radius.
 current_border_width (integer)::
 	Number of pixels of the border width.
 layout (string)::

i3-save-tree

@@ -90,6 +90,7 @@ my %allowed_keys = map { ($_, 1) } qw(
     fullscreen_mode
     layout
     border
+    border_radius
     current_border_width
     floating
     percent
@@ -122,6 +123,8 @@ sub strip_containers {
 
     delete $tree->{current_border_width} if $tree->{current_border_width} == -1;
 
+    delete $tree->{border_radius} if $tree->{border_radius} == 0;
+
     for my $key (keys %$tree) {
         delete $tree->{$key} unless exists($allowed_keys{$key});
     }

include/commands.h

@@ -80,6 +80,12 @@ void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px,
  */
 void cmd_border(I3_CMD, const char *border_style_str, long border_width);
 
+/**
+ * Implementation of 'border_radius [all] <px>'.
+ *
+ */
+void cmd_border_radius(I3_CMD, long border_radius, const char *border_radius_target);
+
 /**
  * Implementation of 'nop <comment>'.
  *

include/con.h

@@ -587,3 +587,9 @@ void con_merge_into(Con *old, Con *new);
  *
  */
 bool con_inside_stacked_or_tabbed(Con *con);
+
+/**
+ * Returns true if the containers has no configured outer gap.
+ *
+ */
+bool has_outer_gaps(gaps_t gaps);

include/config_directives.h

@@ -46,6 +46,7 @@ CFGFUN(for_window, const char *command);
 CFGFUN(gaps, const char *workspace, const char *type, const long value);
 CFGFUN(smart_borders, const char *enable);
 CFGFUN(smart_gaps, const char *enable);
+CFGFUN(border_radius, const long radius);
 CFGFUN(floating_minimum_size, const long width, const long height);
 CFGFUN(floating_maximum_size, const long width, const long height);
 CFGFUN(default_orientation, const char *orientation);

include/configuration.h

@@ -274,6 +274,9 @@ struct Config {
 
     /* Disable gaps if there is only one container on the workspace */
     smart_gaps_t smart_gaps;
+
+    /* Border radius specified in pixel units */
+    int32_t border_radius;
 };
 
 /**

include/data.h

@@ -805,4 +805,7 @@ struct Con {
 
     /* The colormap for this con if a custom one is used. */
     xcb_colormap_t colormap;
+
+    /* Border radius specified in pixel units */
+    uint32_t border_radius;
 };

parser-specs/commands.spec

@@ -21,6 +21,7 @@ state INITIAL:
   'reload' -> call cmd_reload()
   'shmlog' -> SHMLOG
   'debuglog' -> DEBUGLOG
+  'border_radius' -> BORDER_RADIUS
   'border' -> BORDER
   'layout' -> LAYOUT
   'append_layout' -> APPEND_LAYOUT
@@ -120,6 +121,18 @@ state BORDER_WIDTH:
   border_width = number
     -> call cmd_border($border_style, &border_width)
 
+# border_radius <px>
+# border_radius all <px>
+state BORDER_RADIUS:
+  target = 'all'
+    -> BORDER_RADIUS_WITH_TARGET
+  argument = number
+    -> call cmd_border_radius(&argument, NULL)
+
+state BORDER_RADIUS_WITH_TARGET:
+  argument = number
+    -> call cmd_border_radius(&argument, $target)
+
 # gaps inner|outer|horizontal|vertical|top|right|bottom|left [current] [set|plus|minus|toggle] <px>
 state GAPS:
   type = 'inner', 'outer', 'horizontal', 'vertical', 'top', 'right', 'bottom', 'left'

parser-specs/config.spec

@@ -28,6 +28,7 @@ state INITIAL:
   'gaps'                                   -> GAPS
   'smart_borders'                          -> SMART_BORDERS
   'smart_gaps'                             -> SMART_GAPS
+  'border_radius'                          -> BORDER_RADIUS
   'floating_minimum_size'                  -> FLOATING_MINIMUM_SIZE_WIDTH
   'floating_maximum_size'                  -> FLOATING_MAXIMUM_SIZE_WIDTH
   'floating_modifier'                      -> FLOATING_MODIFIER
@@ -105,6 +106,11 @@ state INCLUDE:
   pattern = string
       -> call cfg_include($pattern)
 
+# border_radius <radius>
+state BORDER_RADIUS:
+  radius = number
+      -> call cfg_border_radius(&radius)
+
 # floating_minimum_size <width> x <height>
 state FLOATING_MINIMUM_SIZE_WIDTH:
   width = number

src/commands.c

@@ -762,6 +762,35 @@ void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
     ysuccess(true);
 }
 
+/*
+ * Implementation of 'border_radius [all] <px>'.
+ *
+ */
+void cmd_border_radius(I3_CMD, long border_radius, const char *target) {
+    DLOG("border radius should be changed to %ld for %s\n", border_radius, target);
+
+    HANDLE_EMPTY_MATCH;
+
+    if (target && strcmp(target, "all") == 0) {
+        Con *con;
+        TAILQ_FOREACH (con, &all_cons, all_cons) {
+            DLOG("matching: %p / %s\n", con, con->name);
+
+            con->border_radius = border_radius;
+        }
+    } else {
+        owindow *current;
+        TAILQ_FOREACH (current, &owindows, owindows) {
+            DLOG("matching: %p / %s\n", current->con, current->con->name);
+
+            current->con->border_radius = border_radius;
+        }
+    }
+
+    cmd_output->needs_tree_render = true;
+    ysuccess(true);
+}
+
 /*
  * Implementation of 'nop <comment>'.
  *

src/con.c

@@ -44,6 +44,7 @@ Con *con_new_skeleton(Con *parent, i3Window *window) {
     new->border_style = new->max_user_border_style = config.default_border;
     new->current_border_width = -1;
     new->window_icon_padding = -1;
+    new->border_radius = config.border_radius;
     if (window) {
         new->depth = window->depth;
     } else {
@@ -1802,7 +1803,7 @@ Con *con_descend_direction(Con *con, direction_t direction) {
     return con_descend_direction(most, direction);
 }
 
-static bool has_outer_gaps(gaps_t gaps) {
+bool has_outer_gaps(gaps_t gaps) {
     return gaps.top > 0 ||
            gaps.right > 0 ||
            gaps.bottom > 0 ||
@@ -1875,6 +1876,7 @@ static Rect con_border_style_rect_without_title(Con *con) {
     if (borders_to_hide & ADJ_LOWER_SCREEN_EDGE) {
         result.height += border_width;
     }
+
     return result;
 }
 

src/config.c

@@ -225,6 +225,8 @@ bool load_configuration(const char *override_configpath, config_load_t load_type
     config.gaps.bottom = 0;
     config.gaps.left = 0;
 
+    config.border_radius = 0;
+
     /* Set default urgency reset delay to 500ms */
     if (config.workspace_urgency_timer == 0) {
         config.workspace_urgency_timer = 0.5;

src/config_directives.c

@@ -347,6 +347,10 @@ CFGFUN(smart_gaps, const char *enable) {
     }
 }
 
+CFGFUN(border_radius, const long radius) {
+    config.border_radius = radius;
+}
+
 CFGFUN(floating_minimum_size, const long width, const long height) {
     config.floating_minimum_width = width;
     config.floating_minimum_height = height;

src/ipc.c

@@ -506,6 +506,9 @@ void dump_node(yajl_gen gen, struct Con *con, bool inplace_restart) {
     ystr("current_border_width");
     y(integer, con->current_border_width);
 
+    ystr("border_radius");
+    y(integer, con->border_radius);
+
     dump_rect(gen, "rect", con->rect);
     if (con_draw_decoration_into_frame(con)) {
         Rect simulated_deco_rect = con->deco_rect;

src/load_layout.c

@@ -374,6 +374,12 @@ static int json_string(void *ctx, const unsigned char *val, size_t len) {
                 LOG("Unhandled \"border\": %s\n", buf);
             }
             free(buf);
+        } else if (strcasecmp(last_key, "border_radius") == 0) {
+            long r;
+            if (!parse_long((const char *)val, &r, 10)) {
+                LOG("Unhandled \"border_radius\": %s\n", val);
+            }
+            json_node->border_radius = r;
         } else if (strcasecmp(last_key, "type") == 0) {
             char *buf = NULL;
             sasprintf(&buf, "%.*s", (int)len, val);
@@ -493,9 +499,11 @@ static int json_int(void *ctx, long long val) {
         json_node->num = val;
     }
 
-    if (strcasecmp(last_key, "current_border_width") == 0) {
+    if (strcasecmp(last_key, "border_radius") == 0)
+        json_node->border_radius = val;
+
+    if (strcasecmp(last_key, "current_border_width") == 0)
         json_node->current_border_width = val;
-    }
 
     if (strcasecmp(last_key, "window_icon_padding") == 0) {
         json_node->window_icon_padding = val;