打字机组件

import javax.microedition.lcdui.Graphics; import mmo3.main.MainCanvas; import mmo3.ui.component.Component; import mmo3.util.Common; /** * 打字机效果的layer * @author tiger * @date 2010-12-1 */ public class TypeTextLayer extends Container implements ContainerListener { // private String text ; private String[] arrays; private int charNum ; //一行的最大字数 private int lineNum ; //每页的最大行数 private int currentLine = 0; // 当前行 private int currentColumn = 0; //打到了当前行的哪个字 private int beginLineIndex = 0; //当前开始行的索引 用于翻页 private byte offsetX = 5; private byte offsetY = 5; public TypeTextLayer(String text) { super(1); // this.text = text; this.x = 20; this.y = 30; this.setWidth(MainCanvas.SCREEN_WIDTH - 40); this.setHeight(180); charNum = (this.getWidth() - 2 * offsetX) / Common.CHAR_WIDTH; lineNum = (this.getHeight() - 2 * offsetY) / Common.FONT_HEIGHT; int size = (text.length() + charNum - 1) / charNum; arrays = new String[size]; for(int i = 0; i < arrays.length; i++) { if(i == arrays.length - 1) { arrays[i] = text.substring(i * charNum); }else{ arrays[i] = text.substring(i * charNum , i * charNum + charNum); } } this.setListener(this); } public void draw(Graphics g , int x, int y) { g.setColor(0x423456); g.fillRoundRect(x, y, getWidth(), getHeight(), 20, 20); g.setColor(0x65f331); int tx = x + offsetX; int ty = y + offsetY; for(int i = beginLineIndex; i < currentLine; i++) { g.drawString(arrays[i], tx, ty, 0); ty += 20; } g.drawString(arrays[currentLine].substring(0, currentColumn), tx, ty, 0); if(this.counter % 4 != 0) { return; } //画完的处理 if(currentLine == arrays.length - 1 && currentColumn == arrays[arrays.length - 1].length() - 1) { beginLineIndex = 0; currentLine = 0; currentColumn = 0; return; } currentColumn++; if(currentColumn == charNum + 1) //换行 { currentLine ++; currentColumn = 0; if(currentLine - beginLineIndex == lineNum) //换页 { beginLineIndex = currentLine; } } } public void processLayerAction(Container container, Component actionComponent, int actionType) { this.close(); } public void processLayerClose(Container container) { this.close(); } // String str = "庆历四年春，滕子京谪守巴陵郡。越明年，政通人和，百废具兴，乃重修岳阳楼，增其旧制，刻唐贤今人诗赋于其上，" + // "属予作文以记之。 予观夫巴陵胜状，在洞庭一湖。衔远山，吞长江，浩浩汤汤，横无际涯；朝晖夕阴，气象万千；此则岳阳楼之大观也，" + // "前人之述备矣。然则北通巫峡，南极潇湘，迁客骚人，多会于此，览物之情，得无异乎？ 若夫霪雨霏霏，连月不开；阴风怒号，浊浪排空；" + // "日星隐耀，山岳潜形；商旅不行，樯倾楫摧；薄暮冥冥，虎啸猿啼；登斯楼也，则有去国怀乡，忧谗畏讥，满目萧然，感极而悲者矣！ " + // "至若春和景明，波澜不惊，上下天光，一碧万顷；沙鸥翔集，锦鳞游泳，岸芷汀兰，郁郁青青。" + // "而或长烟一空，皓月千里，浮光跃金，静影沈璧，渔歌互答，此乐何极！登斯楼也，则有心旷神怡，宠辱偕忘、把酒临风，其喜洋洋者矣！" + // " 嗟夫！予尝求古仁人之心，或异二者之为，何哉？不以物喜，不以己悲，居庙堂之高，则忧其民；处江湖之远，则忧其君。" + // "是进亦忧，退亦忧；然则何时而乐耶？其必曰：“先天下之忧而忧，后天下之乐而乐矣！”噫！微斯人，吾谁与归！时六年九月十五日。 "; }