feat(bar): 添加状态栏 bar 模块的基础架构和 workspace 指示器

src/bar/workspaces.h

@@ -0,0 +1,73 @@
+#pragma once
+
+#include <stddef.h>
+#include <zdwm/action.h>
+#include <zdwm/bar.h>
+#include <zdwm/listeners.h>
+#include <zdwm/types.h>
+
+typedef struct bar_workspace_palette_t {
+  const char *bg;
+  const char *fg;
+  const char *active_bg;
+  const char *active_fg;
+  const char *urgent_bg;
+  const char *urgent_fg;
+} bar_workspace_palette_t;
+
+typedef struct bar_workspace_t {
+  zdwm_workspace_t info;
+  size_t window_count;
+  size_t urgent_window_count;
+} bar_workspace_t;
+
+typedef struct bar_workspace_state_t {
+  zdwm_output_id_t output_id;
+  zdwm_workspace_id_t workspace_id;
+  bar_workspace_t *workspaces;
+  size_t count;
+  size_t capacity;
+
+  zdwm_window_t *windows;
+  size_t window_count;
+  size_t window_capacity;
+
+  bar_workspace_palette_t palette;
+
+  bool list_inited;
+  bool active_inited;
+  bool dirty;
+} bar_workspace_state_t;
+
+void *bar_workspaces_create_state(zdwm_output_id_t output_id, void *config);
+void bar_workspaces_update(
+  zdwm_bar_item_t *item,
+  const zdwm_bar_cell_api_t *cell_api,
+  void *state
+);
+zdwm_action_t bar_workspace_on_click(
+  zdwm_bar_item_t *item,
+  size_t cell_index,
+  int32_t x,
+  void *state
+);
+void bar_workspace_destroy_state(void *state);
+
+void bar_workspace_list_filter(
+  const zdwm_workspace_t *list,
+  size_t count,
+  void *user_data
+);
+void bar_workspace_active_updated(
+  zdwm_output_id_t output_id,
+  zdwm_workspace_id_t workspace_id,
+  void *user_data
+);
+void bar_workspace_initial_windows(
+  const zdwm_window_t *list,
+  size_t count,
+  void *user_data
+);
+void bar_workspace_window_added(const zdwm_window_t *window, void *user_data);
+void bar_workspace_window_updated(const zdwm_window_t *window, void *user_data);
+void bar_workspace_window_removed(zdwm_window_id_t window_id, void *user_data);