Java实现动画逐字打印

在现代，摒弃传统的会话方式，很多的图形广告或游戏采用了[逐字打印]的效果来展示文字，当然，这样做的目的无非是为了突出内容或吸引眼球。

但是这种实现方式却是值得借鉴的，以下，我给出一个JAVA实现的简单用例，需要者可以自行扩充。

代码实现：

package org.test;

import java.awt.Color;

import java.awt.Font;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Panel;

import java.awt.image.BufferedImage;

import org.loon.framework.game.helper.ImageHelper;

/** *//**

* <p>

* Title: LoonFramework

* </p>

* Description:JAVA实现对话逐字打印（由Loonframework提供）

* Copyright: Copyright (c) 2007

* Company: LoonFramework

* 

* @author chenpeng

* @email：[email][email protected][/email]

* @version 0.1

*/

public final class WriterType extends Panel implements Runnable {

        // 最大对话数

        private int _MAX_COUNT = 10;

        //间隔标记

        private char _flag='|';

        private Image _screen;

        private Graphics _bg;

        private Thread _L_WriterType;

        private static Color _L_fClr;

        private static Color _L_bClr;

        private static String _M_Text[];

        private int _S_COUNT;

        private Font _L_TTF;

        private int _L_Speed;

        private int _L_Delay;

        private String _C_Text[];

        private static int _L_COUNT;

        private static int _F_COUNT;

        private static int _T_COUNT;

        private static int _N_Text;

        private String _FontName;

        private final static int _WIDTH = 500;

        private final static int _HEIGHT = 375;

        private static int _FontStyle;

        private static int _FontSize;

        private static    Image _back = null;

        /** *//**

         * 

         */

        private static final long serialVersionUID = 1L;

        private boolean _isRun;

         * 析构函数,注入背景图,循环显示的文字数组,速度,延迟

         * @param img

         * @param strContent

         * @param speed

         * @param delay

        public WriterType(Image img,String[] strContent, int speed, int delay) {

                init(img,strContent, speed, delay);

        }

        private WriterType() {

        public void init(Image img,String[] strContent, int speed, int delay) {

                //初始背景色

                setBackground(Color.BLACK);

                // 原始对话信息

                _M_Text = new String[_MAX_COUNT];

                // 缓存对话信息

                _C_Text = new String[_MAX_COUNT];

                _back=img;

                _FontName = "宋体";

                _FontStyle = 0;

                _FontSize = 15;

                _L_TTF = new Font(_FontName, _FontStyle, _FontSize);

                _L_bClr = Color.BLACK;

                _L_fClr = new Color(250, 250, 250);

                int length = strContent.length;

                // 循环次数

                _N_Text = strContent.length - 1;

                // 直接copy String数组

                System.arraycopy(strContent, 0, _M_Text, 0, length);

                //速度及延迟设定

                _L_Speed = speed;

                _L_Delay = delay;

                //缓存区域

                _screen = new BufferedImage(_WIDTH, _HEIGHT, 1);

                _bg = _screen.getGraphics();

                //开启线程

                        _isRun = true;

                        _L_WriterType = new Thread(this);

                        _L_WriterType.start();

         * 停止线程

         *

        public void stop() {

                _S_COUNT = 0;

                _L_COUNT = 0;

                _F_COUNT = 0;

                if (_L_WriterType != null) {

                        _isRun = false;

                        _L_WriterType = null;

                }

         * 绘制图形

        public void paint(Graphics g) {

                _bg.setColor(_L_bClr);

                _bg.fillRect(0, 0, _WIDTH, _HEIGHT);

                _bg.setColor(_L_fClr);

                _bg.setFont(_L_TTF);

                _bg.drawImage(_back, 0, 0, this);

                for (int i = 0; i <= _L_COUNT; i++) {

                        //转换当前字体top位置

                        Double top = new Double((double) _FontSize

                                        * (3.0D + 2.0D * (double) i));

                        if (_C_Text[i] != null) {

                                _bg.drawString(_C_Text[i], 50, top.intValue());

                        }

                g.drawImage(_screen, 0, 0, this);

         * 图形变更

        public void update(Graphics g) {

                paint(g);

         * 重新开始

        private void begin() {

                //清除所有缓存数据。

                for (int i = 0; i < _C_Text.length; i++) {

                        _C_Text[i] = null;

                _T_COUNT++;

                if (_T_COUNT > _N_Text) {

                        _T_COUNT = 0;

                repaint();

        public void run() {

                while (_isRun) {

                        try {

                                //字符串累加

                                _S_COUNT++;

                                //当字符串完成整段对话时

                                if (_S_COUNT == _M_Text[_T_COUNT].length()) {

                                        _C_Text[_L_COUNT] = _M_Text[_T_COUNT].substring(_F_COUNT,

                                                        _S_COUNT);

                                        begin();

                                        Thread.sleep(_L_Delay);

                                        repaint();

                                }

                                //比对标识设定缓存对话

                                if (_M_Text[_T_COUNT].charAt(_S_COUNT) != _flag) {

                                                        _S_COUNT)

                                                        + "_";

                                } else {

                                //用以分辨是否转化对话组时的不同延迟

                                boolean shortSleep;

                                //当'|'标识存在时执行

                                if (_M_Text[_T_COUNT].charAt(_S_COUNT) == _flag) {

                                        _L_COUNT++;

                                        _S_COUNT++;

                                        _F_COUNT = _S_COUNT;

                                        shortSleep = true;

                                        shortSleep = false;

                                //刷新

                                repaint();

                                //判断速度

                                if (!shortSleep) {

                                        Thread.sleep(_L_Speed);

                                        Thread.sleep(10 * _L_Speed);

                        } catch (InterruptedException e) {

                                stop();

        public int getMaxCount() {

                return _MAX_COUNT;

        public void setMaxCount(int max_count) {

                _MAX_COUNT = max_count;

        public static void main(String[] args) {

                String[] abracadabra = new String[] {

                                "身为剑体,|钢铁之血灼璃之心.|手创千剑,身经百战;|无一败绩,无一知己.|常一人自醉于剑丘之巅;|此生亦无任何意义;|故此身，定为无限剑成;|故此命，定为无限剑制.",

                                "I am the bone of my sword;|Steel is my body, and fire is my blood.|I have created over a thousand blades.|Have withstood pain to create many weapons.|Yet,those hands will never hold anything.|So as I pray, unlimited blade works." };

                Frame frm = new Frame();

                frm.setTitle("Java图形程序中的对话逐字显示(由Loonframework提供)");

                frm.setSize(_WIDTH, _HEIGHT + 20);

                frm.setResizable(false);

                frm.add(new WriterType(ImageHelper

                                .loadImage("d:/back.jpg", true),abracadabra,50,5000));

                frm.setVisible(true);

}

本例自动循环String数组中所有数据，每行显示对话由'|'标记分割，背景图如下：

效果图1：

效果图2：

PS：ImageHelper只是一个图片加载用类，完全可以用ImageIcon或者ImageIO替代，原来的博客来有人问，兄弟在这声明一下。

本文转自 cping 51CTO博客，原文链接:http://blog.51cto.com/cping1982/116714