miniGUI演讲稿
人机交互演讲稿范文模板

大家好!今天,我很荣幸站在这里,与大家探讨一个日益重要的议题——人机交互。
在这个信息爆炸、技术飞速发展的时代,人机交互已经渗透到我们生活的方方面面。
今天,我将从人机交互的定义、发展历程、应用领域以及未来展望等方面,为大家带来一场关于人机交互的精彩演讲。
一、人机交互的定义人机交互(Human-Computer Interaction,简称HCI)是指人与计算机之间的相互作用过程。
在这个过程中,人作为信息输入者,通过语音、文字、图像等方式与计算机进行沟通;计算机作为信息输出者,通过视觉、听觉、触觉等方式向人提供反馈。
人机交互的目的是提高人机系统的效率,使计算机更好地服务于人类。
二、人机交互的发展历程1. 第一阶段:基于键盘和鼠标的交互20世纪80年代,随着个人电脑的普及,人机交互进入了第一个阶段。
这个阶段的代表技术是键盘和鼠标,它们极大地提高了人机交互的效率。
2. 第二阶段:图形用户界面(GUI)20世纪90年代,图形用户界面(GUI)技术逐渐成熟,使得人机交互变得更加直观、易用。
这一阶段,计算机操作系统和应用程序开始采用图形界面,用户可以通过点击、拖拽等方式进行操作。
3. 第三阶段:触摸屏和手势识别21世纪初,随着智能手机和触控技术的兴起,人机交互进入了第三个阶段。
触摸屏和手势识别技术使得用户可以通过触摸和手势与计算机进行交互,进一步提高了人机交互的便捷性。
4. 第四阶段:人工智能与自然语言处理近年来,人工智能和自然语言处理技术的发展,使得人机交互进入了第四个阶段。
这一阶段,计算机可以更好地理解人类语言,实现语音识别、语义理解等功能,为用户提供更加智能、个性化的服务。
三、人机交互的应用领域1. 智能家居智能家居是当前人机交互的一个重要应用领域。
通过语音助手、智能音箱等设备,用户可以实现对家电的远程控制、家居环境的智能调节等功能。
2. 医疗健康在医疗健康领域,人机交互技术可以应用于远程医疗、辅助诊断、康复训练等方面。
有“灵魂”的编程演讲稿

有“灵魂”的编程演讲稿就在上周日的下午,我带着电脑来到重庆市科技馆,开始机器人编程学习,为人工智能三级考试进行集中培训。
大家祝福一下我吧。
今天呢,我想和大家聊一聊编程这个话习题。
什么是编程?编程几乎能干你不想干的任何事情,假如把编程和人工智能技术结合起来,就能赋予编程“灵魂”,哈哈,不是鬼魂!它可以做:拖地、洗碗、打球、开飞机、轰炸五角大楼(不过轰炸五角大楼可不是我干的哈,那时我还没有出生呢,妈妈也还在上大学),还有做黑客之类的事情(这个得小声点,不然FBI该来找我了),所以,编程就是告诉电脑,我们要求它做什么,因为计算机是个“笨蛋”,没有独立的思维,所以要依靠我们给它预先设定好程序,这个设定的过程就是编程了。
那为什么要编程呢?有学编程的么?举个手吧!要学习编程的原因很多,有的是方便工作,有的是为了玩….比如我初学就是为了玩,我设计一个对战游戏,两人一台电脑,通过操纵键盘进行对战,非常的好玩。
假如你是一个漫话发烧友,可以借助编程,自动选择图片,不用手动一张一张地划了,这个方法我推荐给我的好朋友小贺同学。
我很喜欢飞机,也可以用这个方法选择我想要的图片和视频。
还有的是为了实现人工智能,很多编程语言,如C++等,都可用于人工智能开发。
人工智能是有灵魂的编程了,你们知道人工智能是什么吗?人工智能就是我们经常听说的AI!人工智能机器人都帮我们解决好多大问习题呢,例如一些危险的、高强度的、高精度的,甚至非人力可为的工作,都可以用人工智能机器人解决。
你们有没有什么事情需要机器人来帮助呢?写精选作文?做奥数?回到正习题,前不久啊,NASA研发出火山机器人,用来替代科学家在火山口内进行考察,直接深入火山底部进行测量,了解火山的内部构造。
科学家的境界确实比我深远多了,哎,我就想设计一款机器人帮我做奥数!有没有说中某些童鞋的心声!前些日子,发生了一件悲痛的事,凉山州森林大火让30多名消防员牺牲,这么危险的山火,为什么非得要人去呢?我希望能研发出一种救援机器人,有了它就不会让消防员经常置身险境了!那么,救援机器人能做什么呢?救援机器人可以迅速出划出隔离带,部分机器人可以冲进大火中心地带灭火,飞行机器人可以飞到天上喷撒各种灭火材料,注意一点,他们还要防火,被烧焦了怎么行呢?最后,我想说的是,我希望编程是有“灵魂”的,有“灵魂”的编程就能铸造有“灵魂”的机器人!谢谢大家!。
有“灵魂”的编程演讲稿

有“灵魂”的编程演讲稿尊敬的评委、亲爱的观众们:大家好!很荣幸能在这个舞台上与诸位分享我的演讲,主题是“灵魂的编程”。
在数字时代的今天,计算机科学和编程已经成为了一门重要的学科和职业。
然而,仅仅追求技术的背后存在着一种更深层次的东西——灵魂。
灵魂是一个抽象的术语,很难用具体的词语定义。
它是我们内心深处的那个独特的自我,是我们思考、感知和情感的核心。
尽管编程看起来是一项冷静、理性的工作,但我坚信它也需要有灵魂的注入。
首先,灵魂是创造力的源泉。
编程不仅仅是写出一串指令,而是将我们的思想和想象力转化为现实的过程。
只有通过灵魂的驱动,我们才能超越常规思维,创造出独特的、与众不同的代码。
正是这样的创造力,推动了科技的发展和人类社会的进步。
其次,灵魂是使命的引导。
作为一名程序员,我们肩负着举足轻重的责任。
我们的代码可能直接影响到人们的生活甚至命运。
当我们怀着对社会和他人的真诚关切,把灵魂融入到我们的编程中时,我们的代码就会更加有意义、有价值。
灵魂带来了我们对于使命的铭刻,使我们的编程不再仅仅是为了追求功利,而是能够为社会做出实质性的贡献。
最后,灵魂是连接的桥梁。
编程并不是一个独自完成的工作,它需要与他人合作、共同创造。
当我们将灵魂注入我们的编程中时,我们不仅仅是在创造代码,更是在与其他创造者和使用者形成一种连接。
这样的连接使得我们的工作具有更大的意义和影响力,促进了我们与他人的共同成长和共同进步。
在结束演讲之前,我想引用一位古希腊哲学家的名言:“人以灵魂得意,以智慧有荣。
”编程不仅仅是一门技术,更是一门艺术,它需要我们用灵魂去感知、去思考、去创造。
只有当我们将灵魂注入我们的编程中时,我们才能真正体验到编程的真谛,创造出有生命力的代码,为社会做出更大的贡献。
谢谢大家!。
12岁小女孩在联合国峰会上的英语演讲稿

12岁小女孩在联合国峰会上的英语演讲稿Hello, I'm Severn Suzuki speaking for E.C.O. - The Environmental Children's Organisation.We are a group of twelve and thirteen-year-olds from Canada trying to make a difference:Vanessa Suttie, Morgan Geisler, Michelle Quigg and me. We raised all the money to come here ourselves to come five thousand miles to tell you adults you must change your ways. Coming up here today, I have no hidden agenda.I am fighting for my future.Losing my future is not like losing an election or a few points on the stock market. I am here to speak for all generations to come.I am here to speak on behalf of the starving children around the world whose cries go unheard.I am here to speak for the countless animals dying across this planet because they have nowhere left togo.I am afraid to go out in the sun now because of the holes in the ozone. I am afraid to breathe the air because I don't know what chemicals are in it.I used to go fishing in Vancouver ,my home,with my dad until just a few years ago we found the fish full of cancers. And now we hear about animals and plants going exinct every day -- vanishing forever.In my life, I have dreamt of seeing the great herds of wild animals, jungles and rainforests full of birds and butterfilies, but now I wonder if they will even exist for my children to see.Did you have to worry about these little things when you were my age?All this is happening before our eyes and yet we act as if we have all the time we want and all the solutions. I'm only a child and I don't have all thesolutions, but I want you to realize, neither do you!You don't know how to fix the holes in our ozone layer.You don't know how to bring salmon back up a dead stream.You don't know how to bring back an animal now extinct.And you can't bring back the forests that once grew where there is now desert.If you don't know how to fix it, please stop breaking it!Here, you may be delegates of your governments, business people, organizers, reporters or politicians - but really you are mothers and fathers, sisters and brothers, aunts and uncles - and all of you are someone's child.I'm only a child yet I know we are all part of a family, five billion strong ,in fact, 30 million species strong and borders and governments will neverchange that.I'm only a child yet I know we are all in this together and should act as one single world towards one single goal.In my anger, I am not blind, and in my fear, I am not afraid to tell the world how I feel.In my country, we make so much waste, we buy and throw away, buy and throw away, and yet northern countries will not share with the needy. Even when we have more than enough, we are afraid to share, we are afraid to let go some of our wealth.In Canada, we live the privileged life, with plenty of food, water and shelter -- we have watches, bicycles, computers and television sets.The list could go on for two daysTwo days ago here in Brazil, we were shocked when we spent some time with some children living on the streets. This is what one child told us: "I wish I was rich and if I were, I would give all the street childrenfood, clothes, medicine, shelter and love and affection."If a child on the street who has nothing, is willing to share, why are we who have everyting still so greedy?I can't stop thinking that these are children my own age, that it makes a tremendous difference where you are born, that I could be one of those children living in the Favellas of Rio; I could be a child starving in Somalia; a victim of war in the Middle East or a beggar in India.I'm only a child yet I know if all the money spent on war was spent on finding environmental answers, ending poverty and finding, treaties. what a wonderful place this earth would be!At school, even in kindergarten, you teach us how to behave in the world. You teach us:not to fight with others,to work things out,to respect others,to clean up our mess,not to hurt other creaturesto share - not be greedy.Then why do you go out and do the things you tell us not to do?Do not forget why you're attending these conferences, who you're doing this for -- we are your own children. You are deciding what kind of world we will grow up in. Parents should be able to comfort their children by saying " Everyting's going to be all right" , "it's not the end of the world”. And we're doing the best we can"But I don't think you can say that to us anymore. Are we even on your list of priorities? My dad always says "You are what you do, not what you say."Well, what you do makes me cry at night. You grown ups say you love us. But I challenge you, please make your actions reflect your words. Thank you.。
马云20xx联合国创变者致辞英文演讲稿

马云20xx联合国创变者致辞英文演讲稿Thank you very much! I am so humbled and honored to be here tonight. I never thought that I would have a chance in my life to be in the United Nations.I learned my English by myself when I was 12 years old, for whatever reasons, I dont know. I just felt in love with this language. Every morning from 5 o?clock I rode a bicyclefor 40 minutes, to the Hangzhou hotel looking for foreign tourists to teach me English.I showed them around the city, they taught me English.Since then, I began to have a habit. You should use your own brain to think about it, just one more minutes. When everything about it is yes, wait one minute. When everybody says no, wait for one minute. Think about it carefully. ?Cause if you look at the world from a different way, you may do it in a different way.And tonight, I?m so honored to be inspired by all the Game Changer partners. By listening to their stories, I know there are so many things I should do, I can do better.There are so many things. And I think that here today I not represent of myself, but represent all the small guys, all the small business that I?ve been working with.1995 when I left my University, I told my president of university that I?m going to be anentrepreneur, do the internet. He said: “What is Internet?” I said: “I dont know.” And he listened to me for two hours, and said: “Jack, I know you want to do something, I dont know what you do. But 10 years later, if you want to be back, please go back. I say: “Ok, ten years later, I will do that.” I know as a teacher as I said, teachers always believe the future, you believe that knowledge can change peoples lives, you believe and you hope that your students are better than you are. Students are the best products. Today, I am not a teacher, but I got CEO in the chief education officer” of my school. I know that my colleagues dont like me because I talk a lot. But I say, I do the talk, you do the work.When I started my business, it?s so difficult to be a small business owner in the China. It took me 5 months to borrow $500, but I still failed. No chance, and I dont have any idea to run a business. And when I go to register a company, called the Internet, the registered officetold me, no, there?s no such a word Internet in the dictionary. How can can you register the “Internet”? You have to register another name. So he advised me to use “Computer consulting firm”. But I had no idea about what is computer. So my first company was Hangzhou Hope Computer Consulting Firm. It was tough without knowing anything about technology, without knowing anything about the computer.In the past fifteen years, I called myself a blind man riding on the back of a blind tiger, but those experts riding on the horses all failed, we survived. Because we worried the future, we believed the future, we changed ourselves, we never complained about others. And we believe one thing, I told the team in my apartment, we have to prove ourselves, because if we can be successful, 80% of the young people can be successful. We don?t have a rich father, we have a powerful uncle, we did not get one dollar from the government, we did not get one dollar from the bank, we startedfrom zero. So we have to work hard. It?s not to prove ourselves, but prove our generation, prove the internet power. So this is what I want to share with young people.And the other thing I believe is small is beautiful. If nobody helps the small guys, we can use the Internet to help the small guys. Multi-National Companies was taken good care of by the Wall Street; only small businesses had nobody to help them. If we create value for them, then we will succeed. Our philosophy is that if you can help others successful, you will be successful. I?m a person who believe the future, believe young people, believe innovation.And today I want to say one thing as the General Secretary said, the world is full of problems. Today, the world is full of complaints. I complained when I was 20 years old. There are Microsoft, IBM, CISCO,they are all big companies. We are helpless because they are too big. We complained. But now I never complain, I say I am a big guy too.I want to tell young people, where most people complain, where the opportunity is. Some people complain, and some people start to change themselves, changing others. Where the opportunities are is where the complains are. Where the trouble, where the opportunities.I always believe it, and this is how we go through.The last but very important, I?m going to give you a t-shirt. Another T-shirt, right? This is a special t-shirt of Alibaba IPO. It?s all made by small guys. And this is a small guy. And small is beautiful, small is powerful. But in this T-shirt, very few people know that we have a secret codeof Alibabas success. Just like the open sesame, there?s a secret for Alibaba. The secret code for everybody is Keep your Dream Alive”. Because it might come true someday. This is what the secret code is. Thank you very much.。
电子游戏设计师演讲稿

电子游戏设计师演讲稿尊敬的各位老师、亲爱的同学们:大家好!很荣幸能有机会站在这里,和大家分享我对电子游戏设计的一些见解和经验。
作为一名电子游戏设计师,我深知游戏设计在当今社会的重要性,也深知游戏设计师所面临的挑战和责任。
今天,我想和大家一起探讨一下电子游戏设计师的角色和使命。
首先,作为一名电子游戏设计师,我们需要具备创造力和想象力。
游戏是虚拟世界的缩影,而创造力和想象力则是构建这个世界的基石。
一个好的游戏设计师应该有敏锐的观察力,善于发现生活中的细节,善于从中汲取灵感。
只有不断地开拓思维,不断地尝试新的创意,我们才能设计出更加优秀、更加吸引人的游戏作品。
其次,电子游戏设计师需要具备良好的团队合作精神。
游戏的制作是一个复杂的过程,需要各个岗位的人员密切合作,才能最终呈现出完美的作品。
作为游戏设计师,我们需要和程序员、美术设计师、音效师等各个岗位的人员进行良好的沟通和合作,共同推动游戏的制作进程。
只有团结一致,才能创造出更加精彩的游戏作品。
此外,作为电子游戏设计师,我们还需要具备对玩家的深刻理解。
游戏的最终目的是为了玩家,因此,我们需要深入了解玩家的需求和喜好,从玩家的角度出发,设计出更加符合玩家口味的游戏。
只有站在玩家的角度,才能设计出更加受欢迎的游戏作品。
最后,作为一名电子游戏设计师,我们还需要不断地学习和提升自己。
游戏行业是一个不断发展和变化的行业,新的技术、新的理念层出不穷。
作为游戏设计师,我们需要不断地学习新的知识,跟上行业的发展潮流,不断提升自己的设计水平和创作能力。
总之,作为一名电子游戏设计师,我们肩负着推动游戏行业发展的重要使命。
我们需要具备创造力和想象力,良好的团队合作精神,对玩家的深刻理解,以及不断学习和提升自己的能力。
希望我们能够共同努力,推动游戏行业的发展,为玩家带来更多更好的游戏作品。
谢谢大家!。
人工智能主题的演讲稿

演讲稿也称演说词,是在大会上或某些公开场合发表和宣扬的文稿。
演讲稿一般具有宣传、鼓动、教育和欣赏等作用,能够把演讲者的观点、主张与思想感情传达给听众以及读者,让他们能够信服并且在个人的感情和思考上产生共鸣,具有较强的感染力。
演讲稿的质量直接决定了演讲的效果。
同议论文一样,演讲稿也具备论点鲜明、逻辑性强等特点,但绝不是一般的议论文。
下面一起看下为大家精选的演讲稿范文。
人工智能主题的演讲稿1人工智能飞速发展的时代,在智能产品如浪潮般涌现的同时,我们也面临着对计算机“失控”的恐慌。
“阿尔法-go”机器人接连打败世界围棋高手,谷歌实验证明了计算机创造独立语言体系的速度……这样的新闻背后,是人类对于计算机具备和自己同等甚至更强的思考能力后,脱离人类控制甚至控制人类的担忧。
对此问题,苹果公司总裁库克表示,相比于计算机像人类一般思考,他更担心人类像计算机一样思考。
如果人类在智能时代将自己的思维与机器同化,失去了价值观和同情心,那么人类自己将有可能比计算机更先失控。
在超人工智能成为大势所趋的今天,人类的思考方式又在朝着哪个方向发展呢?人工智能在不断发展的过程中拥有了更复杂的逻辑体系,计算机通过大量的数据分析和智能学习模拟人脑精密的神经网络,而这一切恰恰是由人类的意愿所驱动的。
信息的高度发达和智能的创新应用以加倍的速度提高我们做事的效率,也让我们的生活节奏越发紧凑起来。
可差强人意的是,机械化节奏的惯性使我们追求效率却遗忘了公平,讯息的潮流没让我们开拓眼界却迷失在纷繁的价值丛林中,对未来的担忧体现的更多是力图自保的自我中心意识而不是对于人类命运共同体的责任担当。
当人类超越基本生存法则的道德准则没有了,当“他人不在我之外”的“仁”的本性没有了,当人类得以紧密相连应对时代危机的纽带没有了,我们也就失去了最后的,也是唯一的,阻挡人工智能失控潜在危险的防线。
人类的失控,比计算机的失控更为致命。
智能时代,在忧虑科技所带来隐患的同时,相信也无人希望人类因自身的原因陷入被科技反控的深渊。
编程英语演讲稿范文

Ladies and Gentlemen,Good morning/afternoon! It is my great pleasure to stand before youtoday to talk about a subject that is not only shaping our present but also holding the key to our future: programming. In this digital age, programming has emerged as a fundamental skill, akin to literacy in the industrial age. Today, I will explore the importance of programming, its impact on various sectors, and how it empowers us to shape the future.Firstly, let us acknowledge the significance of programming in our lives. Programming is the language of computers, the key to unlocking their immense potential. It is the art of creating instructions for machinesto follow, enabling them to perform tasks efficiently and accurately. From simple applications like word processors to complex systems like artificial intelligence, programming is at the heart of every technological marvel.In the realm of technology, programming has revolutionized the way we live, work, and communicate. The internet, smartphones, and social media platforms are just a few examples of how programming has transformed our daily lives. By learning to program, we gain the ability to create, innovate, and contribute to this ever-evolving digital landscape.Moreover, programming has a profound impact on various sectors of our economy. The demand for skilled programmers has skyrocketed, leading to the growth of the tech industry. From startups to multinational corporations, companies are actively seeking individuals who can develop and maintain their software products. Programming has become a gatewayto numerous career opportunities, offering competitive salaries and exciting challenges.Let us now delve into the sectors where programming has made asignificant difference:1. Healthcare: Programming has revolutionized healthcare by enabling the development of electronic health records, telemedicine platforms, and medical devices. These innovations have improved patient care, reduced errors, and enhanced overall efficiency in the healthcare industry.2. Education: With the advent of online learning platforms, programming has become an essential tool for educators and students alike. These platforms offer personalized learning experiences, making education more accessible and effective.3. Finance: The financial sector has been transformed by programming, with the development of high-frequency trading algorithms, automated investment systems, and blockchain technology. These advancements have not only increased efficiency but also introduced new levels of security and transparency.4. Transportation: Programming has revolutionized the transportation industry, from autonomous vehicles to smart traffic management systems. These innovations aim to reduce traffic congestion, improve safety, and make our roads more sustainable.Now, let us discuss the empowering aspect of programming. Learning to program empowers individuals by equipping them with a set of skills that are in high demand. It fosters creativity, problem-solving abilities, and critical thinking. Moreover, programming enables people to create their own startups, become entrepreneurs, and make a significant impact on society.In conclusion, programming is not just a skill; it is a tool for change. It has the power to transform our world, improve lives, and create a better future. As we move forward, it is crucial that we emphasize the importance of programming education and encourage more individuals to learn this vital skill.In closing, I would like to invite each and every one of you to embrace the world of programming. Let us come together to promote programming education, support aspiring programmers, and contribute to the ongoing digital revolution. Together, we can shape a future where technology empowers us to achieve great things.Thank you for your attention, and I hope you find this discussion inspiring.[Applause]。
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对于进程版的MiniGUI来说,应用程序的 消息传递通过套接字来进行,相应的模型 是:
程序(进程)1 程序(进程)2 套接字 程序(进程)3
服务器程序
鼠标
键盘
MiniGUI-Standalone模式
• MiniGUI-Standalone模式是不需要多线程和多进程 支持的,可以以独立的方式运行的。这个模式适 合运行在功能单一的应用场合。
MiniGUI在Linux下安装: libMiniGUI-1.6.10.tar.gz MiniGUI的源码包
MiniGUI-res-1.6.10.tar.gz MiniGUI的资源包,包 括基本的字符,鼠标,图标等
mg-samples-1.6.10.tar.gz MiniGUI的一些基本的例 子。 qvfb-1.1.tar.gz qvfb源码包 jpegsrc.v6b.tar.gz 支持jpeg的源码包
可配置性
MiniGUI可配置性也很高,MiniGUI 可以被配置成基于线程MiniGUIThreads 运行模式还是基于进程的 MiniGUI-Processes 运行模式,或者只 是最简单的MiniGUI-Standalone 运行模 式,此外它还能配置字体类型,字符 集,图像支持格式,所需要的控件类, 整体风格,等等。
• 4. 通过SendNotifyMessage 发送。该函数向指定的窗口发 送通知消息,将消息放入消息队列后立即返回。由于这种 消息和邮寄消息不同,是不允许丢失的,因此,系统以链 表的形式处理这种消息。
• 5. 通过SendAsyncMessage 发送。利用该函数发送的消息 称为“异步消息”,系统直接调用目标窗口的窗口过程。 • 在MiniGUI 中,一个创建了窗口的线程一般拥有一个消息 队列
MiniGUI的简介
制作人:蒙滨
2011.05.6
• mG3d 是一个为 MiniGUI 的应用程序提供 3D 接口的组件 mGi 是 MiniGUI 的输入法组件,该组件目前提供了软键盘 输入法和手写输入法框架
• mGPlus 组件是对 MiniGUI 图形绘制接口的一个扩充和增 强,主要提供对二维矢量图形和高级图形算法的支持,如 路径、渐变填充和颜色组合等。
MiniGUI线程的通讯机制
MiniGUI的通信机制类似于win32的 消息机制,对于运行在线程模式的 MiniGUI版本,线程间的消息传递模型 如下:
应用主线程 Desktop 线程 其它应用线程
微服务器
Timer线程
Event线程
MiniGUI-Processes
• MiniGUI-Processes是每个程序都是一个进程,每 个进程可以创立多个窗口,实现多进程窗口系统。 这个模式适合具有完整的uxix特性的系统,比如 linux。 • 这个模式有着良好的地址保护,窗口崩溃不会影 响MiniGUI的运行,这是thread模式无法提供的。 • 多线程的程序对程序员要求较高,要考虑函数的 线程安全问题,考虑是否可重入。
图形抽象层和输入抽象层
• • 图形抽象层(GAL)和输入抽象层(IAL)大大提高了MiniGUI 的可移植性, 并将底层图形设备和上层接口分离开来。 抽象层的概念类似Linux 内核虚拟文件系统的概念。它定义了一组不依赖于任 何特殊硬件的抽象接口,所有顶层的图形操作和输入处理都建立在抽象接口 之上。而用于实现这一抽象接口的底层代码称为“图形引擎”或“输入引 擎”,类似操作系统中的驱动程序。利用GAL 和IAL,MiniGUI 可以在许多 已有的图形函数库上运行,比如SVGALib 和LibGGI。并且可以非常方便地将 MiniGUI 移植到其他POSIX 系统上,只需要根据抽象层接口实现新的图形引 擎即可。 在基于Linux 的系统上,可以在LinuxFrameBuffer 驱动程序的基础上建立通用 的MiniGUI 图形引擎。一般而言,基于Linux 的嵌入式系统均会提供 FrameBuffer 支持,这样私有图形引擎可以运行在一般的PC 上,也可以运行 在特定的嵌入式系统上。 相比图形来讲,将MiniGUI 的底层输入与上层相隔显得更为重要。在基于 Linux 的嵌入式系统中,图形引擎可以通过FrameBuffer 而获得,而输入设备 的处理却没有统一的接口。在PC 上,通常使用键盘和鼠标,而在嵌入式系统 上,可能只有触摸屏和为数不多的几个键。在这种情况下,提供一个抽象的 输入层,就显得格外重要。
可移植性
MiniGUI的可移植性很好,它支持 Linux/uClinux、eCos、 uC/OS-II、 VxWorks、ThreadX、Nucleus 、pSOS、 OSE 等操作系统和数十种 SoC 芯片, 已验证的硬件平台包括 ARM-based SoCs 、MIPS based SoCs 、IA-based SoCs 、PowerPC、M68K(DragonBall /ColdFire)、Intel x86 等等含有 MMU(内 存管理单元)的 32 位处理器架构之上, 而且运行在这些平台经过验证都很稳定。
static int HelloWinProc(HWND hWnd, int message, WPARAM wParam, LPARAM lParam) { HDC hdc; switch (message) { case MSG_PAINT: hdc = BeginPaint (hWnd); TextOut (hdc, 60, 60, "Hello world!"); EndPaint (hWnd, hdc); return 0; case MSG_CLOSE: DestroyMainWindow (hWnd); PostQuitMessage (hWnd); return 0; } return DefaultMainWinProc(hWnd, message, wParam, lParam); }
MiniGUI 3.0 实现了桌面的可定制
• MiniGUI 3.0 实现了桌面的可定制。通过桌面的外部编程 接口,用户可以在桌面放置图标并响应桌面事件,实现类 似 Windows 桌面的界面效果。除此之外,MiniGUI 3.0 还 增强了透明控件的实现,使之效率更高,且不依赖于控件 的内部实现代码
关键数据结构— — 消息队列
• 在MiniGUI 中,使用消息驱动作为应用程序的创建构架。MiniGUI 支 持如下几种消息的传递机制。这些机制为多线程环境下的窗口间通讯 提供了基本途径: • 1. 通过PostMessage 发送。消息发送到消息队列后立即返回。这种发 送方式称为“邮寄”消息。如果消息队列中的邮寄消息缓冲区已满, 则该函数返回错误值。 • 2. 通过PostSyncMessage 发送。该函数用来向不同于调用该函数的线 程消息队列邮寄消息,并且只有该消息被处理之后,该函数才能返回, 因此这种消息称为“同步消息”。 • 3. 通过SendMessage 发送。该函数可以向任意一个窗口发送消息,消 息处理完成之后,该函数返回。如果目标窗口所在线程和调用线程是 同一个线程,该函数直接调用窗口过程,如果处于不同的线程,则利 用PostSyncMessage 函数发送同步消息。
MiniGUI的体系结构
• 从整体结构上看,MiniGUI 是分层设计的,在最底层, GAL(图形抽象层)和CAL(输入抽象层)提供底层图形接口 以及鼠标和键盘的驱动,而Pthread(POSIX thread)是用于 提供内核级线程支持的C 函数库。中间层是Mini GUI 的核 心层,其中包括了窗口系统必不可少的各个模块。最顶层 的API 是提供给用户的编程接口。如图 所示:
微客户/服务器结构
• 在多线程环境中,与多进程间的通讯机制类似,线程之间也有交互和 同步的需求。比如,用来管理窗口的线程维持全局的窗口列表,而其 他线程不能直接修改这些全局的数据结构,而必须依据“先来先服务” 的原则,依次处理每个线程的请求,这就是一般性的客户/服务器模 • 式。MiniGUI 利用线程之间的同步操作实现了客户线程和服务器线程 之间的微客户/服务器机制。 • 微客户/服务器机制的核心实现主要集中在消息队列数据结构上。如, MiniGUI 中的 • desktop 微服务器管理窗口的创建和销毁。当一个线程要求desktop 微 服务器建立一个窗口时,该线程首先在desktop 的消息队列中放置一 条消息,然后进入休眠状态而等待desktop处理这一请求,当desktop 处理完成当前任务之后,或正处于休眠状态时,它可以立即处理这一 请求,请求处理完成时,desktop 将唤醒等待的线程,并返回一个处 理结果。
主窗口双缓冲区
• 当 MiniGUI 3.0 的主窗口具有双缓冲区时,我们可以在自 定义缓冲区中获得整个主窗口的渲染结果。在此基础上, 我们可以利用高级 2D 图形接口或者 3D 图形接口获得主 窗口的各种特殊显示效果,如推拉切换、翻页切换、卷曲 效果等等。
外观渲染器
• 观渲染器为用户提供了多种风格的主窗口和控件界面外观 风格。应用程序在这几种风格的窗口界面之间进行切换非 常容易,只要在创建窗口时传递不同的参数,你就可以变 换出不同风格的界面。
编译的时候可能需要x11和qt3.3以上qt4以下版 本的支持,只要下载对应的源码包就可以了。
Helloworld 程序: #include <stdio.h> #include <MiniGUI/common.h> #include <MiniGUI/MiniGUI.h> #inc#include <MiniGUI/window.h>
• 当MiniGUI 在初始化全局数据结构以及各个模块之后, MiniGUI 要启动几个重要的微服务器,它们分别完成不同 的系统任务; • desktop 用于管理MiniGUI 窗口中的所有主窗口,包括建 立、销毁、显示、隐藏、修改 • Z-order、获得输入焦点等等。 • parsor 线程用来从IAL 中收集鼠标和键盘事件,并将收集 到的事件转换为消息而邮寄给desktop 服务器。 • timer 线程用来触发定时器事件。该线程启动时首先设置 Linux 定时器,然后等待desktop线程的结束,即处于休眠 状态。当接收到SIGALRM 信号时,该线程处理该信号并 向desktop服务器发送定时器消息。当desktop 接收到定时 器消息时,desktop 会查看当前窗口的定时器列表,如果 某个定时器过期,则会向该定时器所属的窗口发送定时器 消息。