#include #include #include #include static rt_bool_t view_event_handler(struct rtgui_widget* widget, struct rtgui_event* event) { /* 我们目前只对绘制事件感兴趣 */ if (event->type == RTGUI_EVENT_PAINT) { struct rtgui_dc* dc; struct rtgui_rect rect; /* 获得一个设备上下文 */ dc = rtgui_dc_begin_drawing(widget); if (dc == RT_NULL) return RT_FALSE; /* 如果获取失败代表什么?这个控件是隐藏的或... */ rtgui_widget_get_rect(widget, &rect); /* 获得控件的可视区域 */ /* 先对所在可视区域全部填充为背景色 */ rtgui_dc_fill_rect(dc, &rect); /* 绘制一个hello! */ rtgui_dc_draw_text(dc, "hello world", &rect); /* 通知RTGUI,绘制结束 */ rtgui_dc_end_drawing(dc); return RT_FALSE; } /* 如果不是绘制事件,使用view原来的事件处理函数处理 */ return rtgui_view_event_handler(widget, event); } static void workbench_entry(void* parameter) { rt_mq_t mq; struct rtgui_view* view; struct rtgui_workbench* workbench; /* 创建GUI应用需要的消息队列 */ mq = rt_mq_create("workbench", 256, 4, RT_IPC_FLAG_FIFO); /* 注册当前线程为GUI线程 */ rtgui_thread_register(rt_thread_self(), mq); /* 创建一个工作台 */ workbench = rtgui_workbench_create("main", "workbench"); if (workbench == RT_NULL) return; /* 创建一个工作台上的一个视图 */ view = rtgui_view_create("view"); rtgui_widget_set_event_handler(RTGUI_WIDGET(view), view_event_handler); /* 在工作台上添加一个视图 */ rtgui_workbench_add_view(workbench, view); demo_view_window(workbench); demo_view_label(workbench); demo_view_button(workbench); demo_view_checkbox(workbench); demo_view_progressbar(workbench); demo_view_radiobox(workbench); demo_fn_view(workbench); demo_view_slider(workbench); /* 显示视图 */ demo_view_show(); /* 执行工作台事件循环 */ rtgui_workbench_event_loop(workbench); /* 去注册GUI线程 */ rtgui_thread_deregister(rt_thread_self()); rt_mq_delete(mq); } void workbench_init() { static rt_bool_t inited = RT_FALSE; if (inited == RT_FALSE) /* 避免重复初始化而做的保护 */ { rt_thread_t tid; tid = rt_thread_create("wb", workbench_entry, RT_NULL, 2048, 25, 10); if (tid != RT_NULL) rt_thread_startup(tid); inited = RT_TRUE; } } #ifdef RT_USING_RTGUI #include void workbench() { workbench_init(); } /* finsh的命令输出,可以直接执行workbench()函数以执行上面的函数 */ FINSH_FUNCTION_EXPORT(workbench, workbench demo) #endif