feat(window): 添加判断窗口能否调整大小的辅助函数

src/core/policy.c

@@ -540,6 +540,7 @@ static void route_pointer_motion(
   } break;
   case ZDWM_WINDOW_INTERACTION_RESIZE: {
     auto window = state_window_get(ctx->state, window_id);
+    if (!window_can_resize(window)) break;
 
     auto rect  = interaction->origin_rect;
     auto start = interaction->start_coordinate;

src/core/window.c

@@ -171,3 +171,10 @@ bool window_should_fix_size(const window_t *window) {
   auto min = window->min_size;
   return max.width == min.width && max.height == min.height;
 }
+
+bool window_can_resize(const window_t *window) {
+  if (window->fullscreen || window->maximized) return false;
+  if (window_should_fix_size(window)) return false;
+
+  return true;
+}

src/core/window.h

@@ -130,3 +130,4 @@ bool window_need_move(const window_t *window, int32_t x, int32_t y);
 bool window_need_resize(const window_t *window, int32_t width, int32_t height);
 bool window_should_has_border(const window_t *window);
 bool window_should_fix_size(const window_t *window);
+bool window_can_resize(const window_t *window);