一个简单的拖动图形和文字的匹配例子

想换个名字可以吗 · 发表于 2014-3-14 20:41:29

用fd写的例子
Main.as

package
{
import Flash.accessibility.AccessibilityProperties;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.text.TextField;
/**
* ...
* @author langxianmeng
*/
public class Main extends Sprite
{
public var shapes:Array = new Array();
public var currSpr:ShapeSpr ;
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
// entry point
var txtspr:TxtSpr = new TxtSpr('正方形');
this.addChild(txtspr);
var txtspr1:TxtSpr = new TxtSpr('长方形',2);
this.addChild(txtspr1);
shapes.push(txtspr);
shapes.push(txtspr1);
txtspr1.x = txtspr.x + 200;
var squr:ShapeSpr = new ShapeSpr(1);
this.addChild(squr);
squr.x = squr.y = 100;
var squr1:ShapeSpr = new ShapeSpr(2);
this.addChild(squr1);
squr1.x = squr1.y = 100;
squr1.x = squr.x + squr.width + 20;
var squr2:ShapeSpr = new ShapeSpr(3);
this.addChild(squr2);
squr2.x = squr2.y = 100;
squr2.x = squr1.x + squr1.width + 20;
this.addEventListener(MouseEvent.MOUSE_DOWN, this_mouseDown);
}
private function this_mouseDown(e:MouseEvent):void
{
trace("main mousedown");
this.currSpr = e.target as ShapeSpr;
this.addEventListener(Event.ENTER_FRAME, this_enterFrame);
trace(e.target.name);
}
private function this_enterFrame(e:Event):void
{
for (var i:int = 0; i < shapes.length; i++) {
if (this.currSpr.hitTestObject(shapes[i])) {
if (currSpr.flag == TxtSpr(shapes[i]).flag) {
//this.removeEventListener(Event.ENTER_FRAME, this_enterFrame);
currSpr.stopDrag();
//匹配后禁止拖动
//currSpr.mouseEnabled = false;
currSpr.x = TxtSpr(shapes[i]).x + ( TxtSpr(shapes[i]).width - currSpr.width) / 2;
currSpr.y = TxtSpr(shapes[i]).y + TxtSpr(shapes[i]).height + 2;
//停止拖动并自动排版
//这里保存了对二者的引用,所以很容易进行排版
//currSpr是当前拖动的图形
//shapes[i]是文字
//注意要流畅
}
}
}
}
}
}