feat: 添加 MOD4 + 鼠标右键调整窗口大小功能

src/backend/x11/backend.c

@@ -538,15 +538,15 @@ static void backend_grab_button(
   }
 }
 
-static void backend_start_move_window(backend_t *backend, xcb_window_t window) {
+static void backend_grab_pointer(backend_t *backend, cursor_t cursor) {
   auto conn = backend->conn;
   auto root = backend->screen->root;
   auto mask = XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
               XCB_EVENT_MASK_POINTER_MOTION;
   auto mode    = XCB_GRAB_MODE_ASYNC;
-  auto cursor = cursor_get_xcb_cursor(backend, ZDWM_CURSOR_MOVE);
+  auto xcursor = cursor_get_xcb_cursor(backend, cursor);
   auto time    = XCB_TIME_CURRENT_TIME;
-  xcb_grab_pointer(conn, false, root, mask, mode, mode, root, cursor, time);
+  xcb_grab_pointer(conn, false, root, mask, mode, mode, root, xcursor, time);
 }
 
 static void backend_merge_effects(
@@ -578,7 +578,10 @@ static void backend_merge_effects(
       );
       break;
     case ZDWM_EFFECT_START_MOVE_WINDOW:
-      backend_start_move_window(backend, e->as.move.window);
+      backend_grab_pointer(backend, ZDWM_CURSOR_MOVE);
+      break;
+    case ZDWM_EFFECT_START_RESIZE_WINDOW:
+      backend_grab_pointer(backend, ZDWM_CURSOR_RESIZE);
       break;
     case ZDWM_EFFECT_MINIMIZE_WINDOW: {
       auto window                = e->as.minimize.window;

src/core/command.h

@@ -14,6 +14,8 @@ typedef enum command_type_t {
   ZDWM_COMMAND_CHANGE_WINDOW_STATE,
   ZDWM_COMMAND_START_MOVE_WINDOW,
   ZDWM_COMMAND_STOP_MOVE_WINDOW,
+  ZDWM_COMMAND_START_RESIZE_WINDOW,
+  ZDWM_COMMAND_STOP_RESIZE_WINDOW,
   ZDWM_COMMAND_WINDOW_SEND_TO_WORKSPACE,
   ZDWM_COMMAND_WINDOW_SET_FLOATING,
   ZDWM_COMMAND_WINDOW_SET_STICKY,
@@ -47,7 +49,7 @@ typedef struct window_state_change_command_t {
 typedef struct window_start_move_command_t {
   window_id_t window;
   point_t pointer_coordinate;
-} window_start_move_command_t;
+} start_interaction_command_t;
 
 typedef struct window_send_to_workspace_command_t {
   window_id_t window;
@@ -100,7 +102,8 @@ typedef struct command_t {
     only_window_data_t withdraw;
     configure_data_t configure;
     window_state_change_command_t state_change;
-    window_start_move_command_t move;
+    start_interaction_command_t move;
+    start_interaction_command_t resize;
     window_send_to_workspace_command_t send_to_workspace;
     window_bool_state_t floating;
     window_bool_state_t sticky;

src/core/plan.c

@@ -110,6 +110,16 @@ void plan_push_move_effect(plan_t *plan, window_id_t window_id) {
   plan_push_effect(plan, &effect);
 }
 
+void plan_push_resize_effect(plan_t *plan, window_id_t window_id) {
+  if (window_id_invalid(window_id)) return;
+
+  effect_t effect = {
+    .type             = ZDWM_EFFECT_START_RESIZE_WINDOW,
+    .as.resize.window = window_id,
+  };
+  plan_push_effect(plan, &effect);
+}
+
 void plan_push_fullscreen_effect(
   plan_t *plan,
   window_id_t window_id,

src/core/plan.h

@@ -13,6 +13,7 @@ typedef enum effect_type_t {
   ZDWM_EFFECT_KILL_WINDOW,
   ZDWM_EFFECT_WITHDRAW_WINDOW,
   ZDWM_EFFECT_START_MOVE_WINDOW,
+  ZDWM_EFFECT_START_RESIZE_WINDOW,
   ZDWM_EFFECT_MINIMIZE_WINDOW,
   ZDWM_EFFECT_MAXIMIZE_WINDOW,
   ZDWM_EFFECT_FULLSCREEN_WINDOW,
@@ -71,6 +72,7 @@ typedef struct effect_t {
     only_window_data_t kill;
     only_window_data_t withdraw;
     only_window_data_t move;
+    only_window_data_t resize;
     effect_bool_window_t minimize;
     effect_bool_window_t maximize;
     effect_bool_window_t fullscreen;
@@ -102,6 +104,7 @@ void plan_push_focus_effect(plan_t *plan, window_id_t window_id);
 void plan_push_kill_effect(plan_t *plan, window_id_t window_id);
 void plan_push_withdraw_effect(plan_t *plan, window_id_t window_id);
 void plan_push_move_effect(plan_t *plan, window_id_t window_id);
+void plan_push_resize_effect(plan_t *plan, window_id_t window_id);
 void plan_push_fullscreen_effect(
   plan_t *plan,
   window_id_t window_id,

src/core/policy.c

@@ -480,6 +480,16 @@ static void route_pointer_press(
     };
     command_buffer_push(out, &start_move_cmd);
   }
+  if (data->button == ZDWM_BUTTON_RIGHT && data->modifiers == ZDWM_MOD_4) {
+    command_t start_resize_cmd = {
+      .type      = ZDWM_COMMAND_START_RESIZE_WINDOW,
+      .as.resize = {
+        .window             = window_id,
+        .pointer_coordinate = data->root,
+      }
+    };
+    command_buffer_push(out, &start_resize_cmd);
+  }
 }
 
 static void route_pointer_release(
@@ -494,6 +504,10 @@ static void route_pointer_release(
     command_t stop_move_cmd = {.type = ZDWM_COMMAND_STOP_MOVE_WINDOW};
     command_buffer_push(out, &stop_move_cmd);
   } break;
+  case ZDWM_WINDOW_INTERACTION_RESIZE: {
+    command_t stop_resize_cmd = {.type = ZDWM_COMMAND_STOP_RESIZE_WINDOW};
+    command_buffer_push(out, &stop_resize_cmd);
+  } break;
   }
 }
 
@@ -523,6 +537,28 @@ static void route_pointer_motion(
     };
     command_buffer_push(out, &configure);
   } break;
+  case ZDWM_WINDOW_INTERACTION_RESIZE: {
+    auto rect  = interaction->origin_rect;
+    auto start = interaction->start_coordinate;
+    auto end   = data->root;
+
+    auto width  = rect.width + (end.x - start.x);
+    auto height = rect.height + (end.y - start.y);
+    width       = MAX(width, 10);
+    height      = MAX(height, 10);
+
+    command_t configure_cmd = {
+      .type         = ZDWM_COMMAND_CONFIGURE_WINDOW,
+      .as.configure = {
+        .window = interaction->window,
+        .changed_fields =
+          ZDWM_CONFIGURE_FIELD_WIDTH | ZDWM_CONFIGURE_FIELD_HEIGHT,
+        .width  = width,
+        .height = height,
+      }
+    };
+    command_buffer_push(out, &configure_cmd);
+  } break;
   }
 }
 
@@ -1297,7 +1333,7 @@ static void change_window_state(
 
 static void start_window_move(
   const policy_context_t *ctx,
-  const window_start_move_command_t *command,
+  const start_interaction_command_t *command,
   plan_t *plan
 ) {
   auto window_id = command->window;
@@ -1314,6 +1350,32 @@ static void start_window_move(
   };
 }
 
+static void start_window_resize(
+  const policy_context_t *ctx,
+  const start_interaction_command_t *command,
+  plan_t *plan
+) {
+  auto window_id = command->window;
+  auto window    = state_window_get(ctx->state, window_id);
+  if (!window) return;
+
+  auto frame_rect = window->frame_rect;
+
+  point_t pointer_position = {
+    .x = frame_rect.x + frame_rect.width,
+    .y = frame_rect.y + frame_rect.height,
+  };
+
+  plan_push_resize_effect(plan, window_id);
+
+  *ctx->interaction = (window_interaction_state_t){
+    .mode             = ZDWM_WINDOW_INTERACTION_RESIZE,
+    .window           = window_id,
+    .start_coordinate = pointer_position,
+    .origin_rect      = frame_rect,
+  };
+}
+
 static void send_window_to_workspace(
   const policy_context_t *ctx,
   const window_send_to_workspace_command_t *command,
@@ -1589,7 +1651,11 @@ void policy_apply_command(
     case ZDWM_COMMAND_START_MOVE_WINDOW:
       start_window_move(ctx, &cmd->as.move, plan);
       break;
+    case ZDWM_COMMAND_START_RESIZE_WINDOW:
+      start_window_resize(ctx, &cmd->as.resize, plan);
+      break;
     case ZDWM_COMMAND_STOP_MOVE_WINDOW:
+    case ZDWM_COMMAND_STOP_RESIZE_WINDOW:
       plan_push_ungrab_pointer(plan);
       p_clear(ctx->interaction, 1);
       break;

src/core/types.h

@@ -117,6 +117,7 @@ typedef struct only_window_data_t {
 typedef enum window_interaction_mode_t {
   ZDWM_WINDOW_INTERACTION_NONE,
   ZDWM_WINDOW_INTERACTION_MOVE,
+  ZDWM_WINDOW_INTERACTION_RESIZE,
 } window_interaction_mode_t;
 
 typedef struct window_interaction_state_t {