extern si_t send_window_activate_message(struct egui_uds* uds_ptr, union message* msg, si_t window_descripter)
{
union message msg_to_be_sent;
copy_message(msg, &msg_to_be_sent);
message_set_window_activate(&msg_to_be_sent, window_descripter);
return comm_send_message(uds_ptr, &msg_to_be_sent);
}
/**
* 请求处理函数；这个函数是comm_recv_request_and_send_respond()里面的回调函数
**/
si_t request_handler(addr_t body, si_t detail_type, union respond* respond_ptr, addr_t arg)
{
char* str = NULL;
si_t ret = 0;
si_t fd = 0;
union message msg;
struct queue* message_queue_ptr = (struct queue*)arg;
switch(detail_type)
{
/**
* 测试普通情况：发送的请求实质是客户端需要远程调用一个函数
**/
case REQUEST_TYPE_DRAW_LINE:
ret = request_call_by_draw_line(body, fake_engine_draw_line);
respond_set_normal(respond_ptr, RESPOND_TYPE_DRAW_LINE, ret);
EGUI_PRINT_INFO("recieved draw line request!");
break;
/**
* 测试特殊情况：发送请求后产生消息，消息先放到队列中，稍后回处理
**/
case REQUEST_TYPE_REGISTER_WINDOW:
/** 读取请求包中的窗口标题和父窗口的句柄 **/
request_get_register_window(body, &fd, &str, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
/** 返回的包是新窗口句柄，此处假设为父窗口句柄+1 **/
ret = fd + 1;
respond_set_normal(respond_ptr, RESPOND_TYPE_REGISTER_WINDOW, ret);
/** 此外，还会发送给客户端一个激活新窗口的消息 **/
message_set_window_activate(&msg, ret);
queue_push(message_queue_ptr, &msg, sizeof(msg));
EGUI_PRINT_INFO("recieved register window request! title = %s", str);
break;
/**
* 测试特殊情况：发送请求要求服务器退出循环
**/
case REQUEST_TYPE_WINDOW_MANAGER_QUIT:
ret = EXIT_NUMBER;
respond_set_normal(respond_ptr, RESPOND_TYPE_WINDOW_MANAGER_QUIT, 0);
EGUI_PRINT_INFO("recived exit request! SERVER EXIT!");
break;
default:
break;
}
return ret;
}
