用纯AS写滚动条

作者佚名技术来源服务器技术浏览发布时间 2012-07-08

前两个星期抽时间看了看一直很感兴趣却没时间研究的XML类和绘图API
觉得也没之前想象的那么神秘：）用了三个晚自习的时间用AS1.0写了这个纯AS+XML的滚动条，算做练习吧。
请高手多多指教！下面是所有的AS代码： //%%%%%%%%%%%%MC类自定义方法%%%%%%%%%%%%//
//——————绘图方法————//
//三角型方法
MovieClip.prototype.sanjiaoxing = function(zuobiao1, zuobiao2, zuobiao3, bangzhi, yanse, toumingdu) {
this.lineStyle(bangzhi, yanse, toumingdu);
this.moveTo(zuobiao1.x, zuobiao1.y);
this.lineTo(zuobiao2.x, zuobiao2.y);
this.lineTo(zuobiao3.x, zuobiao3.y);
this.lineTo(zuobiao1.x, zuobiao1.y);
};
//宽高矩形法，根据初始点坐标和宽与高确定矩形。x，y为初始点坐标，kuan和gao为矩形的宽和高。
MovieClip.prototype.changkuanjuxing = function(x, y, kuan, gao, bangzhi, yanse, toumingdu) {
this.lineStyle(bangzhi, yanse, toumingdu);
this.moveTo(x, y);
this.lineTo(x+kuan, y);
this.lineTo(x+kuan, y+gao);
this.lineTo(x, y+gao);
this.lineTo(x, y);
};
//中心点矩形法，根据中心点的坐标和宽与高确定矩形。x，y为中心点坐标，kuan，gao为矩形的长和宽。
MovieClip.prototype.zhongxinjuxing = function(x, y, kuan, gao, bangzhi, yanse, toumingdu) {
this.lineStyle(bangzhi, yanse, toumingdu);
this.moveTo(x-kuan/2, y+gao/2);
this.lineTo(x+kuan/2, y+gao/2);
this.lineTo(x+kuan/2, y-gao/2);
this.lineTo(x-kuan/2, y-gao/2);
this.lineTo(x-kuan/2, y+gao/2);
};
//————定位方法————//
MovieClip.prototype.dingwei = function(x, y) {
this._x = x;
this._y = y;
};
//————上色方法————//
//定义一个获取颜色值，并把它转化成16进制的函数
//获取颜色值的后六位，使此方法可以同时满足“#FFFFFF”和“0xFFFFFF”两种格式的颜色值
function jinzhizhuanhuan(yansezhi) {
var yansezhi = yansezhi.substr(-6, 6);
return parseInt(yansezhi, 16);
}
Color.prototype.shangse = function(yansezhi) {
this.setRGB(jinzhizhuanhuan(yansezhi));
};
MovieClip.prototype.shangse = function(yansezhi) {
var linshi_color = new Color(this);
linshi_color.shangse(yansezhi);
};
//%%%%%%%%%%%加载XML文档%%%%%%%%%%%%%//
gundongtiao_xml = new XML();
gundongtiao_xml.ignoreWhite = true;
gundongtiao_xml.load("gundongtiao.xml");
gundongtiao_xml.onLoad = function() {
var jiedianlujing_xml = gundongtiao_xml.firstChild.childNodes;
//滚动条背景参数
with (jiedianlujing_xml[0]) {
var gundongtiaobeijingse = jinzhizhuanhuan(attributes["背景色"]);
var gundongtiaotoumingdu = attributes["背景透明度"];
var gundongtiaobiankuangse = jinzhizhuanhuan(attributes["边框色"]);
var gundongtiaobiankuangtoumingdou = attributes["边框透明度"];
var gundongtiaobiankuangcuxi = attributes["边框粗细"];
var gundongtiaokuan = attributes["宽"];
}
//方块参数
with (jiedianlujing_xml[1]) {
var fangkuaibeijingse = jinzhizhuanhuan(attributes["背景色"]);
var fangkuaitoumingdu = attributes["背景透明度"];
var fangkuaibiankuangse = jinzhizhuanhuan(attributes["边框色"]);
var fangkuaibiankuangtoumingdou = attributes["边框透明度"];
var fangkuaibiankuangcuxi = attributes["边框粗细"];
}
//三角参数
with (jiedianlujing_xml[2]) {
var sanjiaoyuanshise = jinzhizhuanhuan(attributes["原始

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