commands: Learn mouse_warping.

Place mouse at center of focused view when changing to a workspace on a
different output, if option is enabled. (This replicates existing i3
option.)

This can be triggered in multiple ways:
A) via `workspace <name>` which changes output
B) via `focus <direction>` which changes output
C) via `focus output <name>` which (obviously) changes output

1 files changed, 19 insertions, 7 deletions

diff --git a/sway/focus.c b/sway/focus.c
index 1aa7579b..7f0b1599 100644
--- a/sway/focus.c
+++ b/sway/focus.c
@@ -4,6 +4,8 @@
 #include "log.h"
 #include "workspace.h"
 #include "layout.h"
+#include "config.h"
+#include "input_state.h"
 
 bool locked_container_focus = false;
 bool locked_view_focus = false;
@@ -49,14 +51,24 @@ static void update_focus(swayc_t *c) {
 }
 
 bool move_focus(enum movement_direction direction) {
-        swayc_t *view = get_focused_container(&root_container);
-        view = get_swayc_in_direction(view, direction);
-        if (view) {
-                if (direction == MOVE_PARENT) {
-                        return set_focused_container(view);
-                } else {
-                        return set_focused_container(get_focused_view(view));
+        swayc_t *old_view = get_focused_container(&root_container);
+        swayc_t *new_view = get_swayc_in_direction(old_view, direction);
+        if (!new_view) {
+                return false;
+        } else if (direction == MOVE_PARENT) {
+                return set_focused_container(new_view);
+        } else if (config->mouse_warping) {
+                swayc_t *old_op = old_view->type == C_OUTPUT ?
+                        old_view : swayc_parent_by_type(old_view, C_OUTPUT);
+                swayc_t *focused = get_focused_view(new_view);
+                if (set_focused_container(focused)) {
+                        if (old_op != swayc_active_output() && focused && focused->type == C_VIEW) {
+                                center_pointer_on(focused);
+                        }
+                        return true;
                 }
+        } else {
+                return set_focused_container(get_focused_view(new_view));
         }
         return false;
 }