feat(action): 实现 switch_workspace cycle_layout 和 cycle_output 操作

src/core/action.c

@@ -2,6 +2,7 @@
 
 #include <paths.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -151,3 +152,28 @@ void toggle_sticky(runtime_t *runtime) {
   };
   command_buffer_push(&runtime->command_buffer, &window_set_sticky_cmd);
 }
+
+void switch_workspace(runtime_t *runtime, workspace_id_t workspace_id) {
+  auto workspace = state_workspace_get(&runtime->state, workspace_id);
+  if (!workspace) return;
+
+  command_t switch_workspace_cmd = {
+    .type                          = ZDWM_COMMAND_SWITCH_WORKSPACE,
+    .as.switch_workspace.workspace = workspace_id
+  };
+  command_buffer_push(&runtime->command_buffer, &switch_workspace_cmd);
+}
+
+void cycle_layout(runtime_t *runtime, int32_t delta) {
+  auto state     = &runtime->state;
+  auto output    = state_output_at(state, state->current_output_index);
+  auto workspace = state_workspace_get(state, output->current_workspace_id);
+  if (!state_workspace_cycle_layout(state, workspace->id, delta)) return;
+
+  runtime->plan.need_relayout = true;
+}
+
+void cycle_current_output(zdwm_runtime_t *runtime, int32_t delta) {
+  auto state = &runtime->state;
+  state_cycle_current_output(state, delta);
+}

src/core/state.c

@@ -145,16 +145,21 @@ static void state_workspace_adjust_focused_window(
   workspace->focused_window_id = ZDWM_WINDOW_ID_INVALID;
 }
 
-bool state_workspace_cycle_layout(state_t *state, workspace_id_t workspace_id) {
+bool state_workspace_cycle_layout(
+  state_t *state,
+  workspace_id_t workspace_id,
+  int32_t delta
+) {
   workspace_t *workspace =
     (workspace_t *)state_workspace_get(state, workspace_id);
   if (!workspace) return false;
 
-  size_t next_index = 0;
+  int32_t index     = 0;
   bool matched      = false;
-  for (size_t i = 0; i < workspace->layout_count; i++) {
+  auto layout_count = (int32_t)workspace->layout_count;
+  for (int32_t i = 0; i < layout_count; i++) {
     if (workspace->layout_id == workspace->available_layouts[i]) {
-      next_index = (i + 1) % workspace->layout_count;
+      index   = i;
       matched = true;
       break;
     }
@@ -162,7 +167,13 @@ bool state_workspace_cycle_layout(state_t *state, workspace_id_t workspace_id) {
 
   if (!matched) return false;
 
-  auto next_layout_id  = workspace->available_layouts[next_index];
+  auto new_index  = index + delta;
+  new_index      %= layout_count;
+  if (new_index < 0) new_index += layout_count;
+
+  if (new_index == index) return false;
+
+  auto next_layout_id  = workspace->available_layouts[new_index];
   workspace->layout_id = next_layout_id;
   return true;
 }

src/core/state.h

@@ -81,7 +81,11 @@ void state_cleanup(state_t *state);
  */
 const workspace_t *state_workspace_get(const state_t *state, workspace_id_t id);
 const workspace_t *state_workspace_at(const state_t *state, size_t index);
-bool state_workspace_cycle_layout(state_t *state, workspace_id_t workspace_id);
+bool state_workspace_cycle_layout(
+  state_t *state,
+  workspace_id_t workspace_id,
+  int32_t delta
+);
 bool state_workspace_set_layout_by_index(
   state_t *state,
   workspace_id_t workspace_id,