container: Add container_is_current_floating

Needed to check if containers are currently floating from render code,
as container_is_floating checks pending state.

include/sway/tree/container.h

@@ -210,9 +210,16 @@ void container_set_geometry_from_content(struct sway_container *con);
 /**
  * Determine if the given container is itself floating.
  * This will return false for any descendants of a floating container.
+ *
+ * Uses pending container state.
  */
 bool container_is_floating(struct sway_container *container);
 
+/**
+ * Same as above, but for current container state.
+ */
+bool container_is_current_floating(struct sway_container *container);
+
 /**
  * Get a container's box in layout coordinates.
  */

sway/desktop/render.c

@@ -359,7 +359,7 @@ static void render_view(struct sway_output *output, pixman_region32_t *damage,
 		container_current_parent_layout(con);
 
 	if (state->border_right) {
-		if (!container_is_floating(con) && siblings->length == 1 && layout == L_HORIZ) {
+		if (!container_is_current_floating(con) && siblings->length == 1 && layout == L_HORIZ) {
 			memcpy(&color, colors->indicator, sizeof(float) * 4);
 		} else {
 			memcpy(&color, colors->child_border, sizeof(float) * 4);
@@ -374,7 +374,7 @@ static void render_view(struct sway_output *output, pixman_region32_t *damage,
 	}
 
 	if (state->border_bottom) {
-		if (!container_is_floating(con) && siblings->length == 1 && layout == L_VERT) {
+		if (!container_is_current_floating(con) && siblings->length == 1 && layout == L_VERT) {
 			memcpy(&color, colors->indicator, sizeof(float) * 4);
 		} else {
 			memcpy(&color, colors->child_border, sizeof(float) * 4);

sway/tree/container.c

@@ -858,6 +858,17 @@ bool container_is_floating(struct sway_container *container) {
 	return false;
 }
 
+bool container_is_current_floating(struct sway_container *container) {
+	if (!container->current.parent && container->current.workspace &&
+			list_find(container->current.workspace->floating, container) != -1) {
+		return true;
+	}
+	if (container->scratchpad) {
+		return true;
+	}
+	return false;
+}
+
 void container_get_box(struct sway_container *container, struct wlr_box *box) {
 	box->x = container->pending.x;
 	box->y = container->pending.y;