[AS3]提示信息类-ToolTip_as3 tool tips-优快云博客

本文介绍了一个使用ActionScript 3.0 (AS3) 开发的提示信息类ToolTip，该类可以创建自定义的提示框，应用于按钮悬停显示说明文字等场景，并提供了完整的代码实现及演示。

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本文摘自：http://www.klstudio.com/post/158.html

[AS3]提示信息类-ToolTip

ToolTip类

/**
* @author Kinglong
* @version 0.1
*/
package project.happy9.browse {
import flash.display.*;
import flash.events.*;
import flash.text.*;
import flash.utils.*;
import flash.filters.*;
public class ToolTip extends Sprite {
private static var _instance:ToolTip;
private var _label:TextField;
public function ToolTip(base:Sprite) {
_label = new TextField();
_label.autoSize = TextFieldAutoSize.LEFT;
_label.textColor = 0x333333;
_label.text = " ";
_label.selectable = false;
_label.x = 3;
_label.y = 2;
addChild(_label);
filters = [getBitmapFilter()];
base.addChild(this);
_instance = this;
_hide();
}
public static function show(lbl:String):void {
if (_instance == null) {
return;
}
_instance._show(lbl);
}
public function _show(lbl:String):void {
visible = true;
_label.text = lbl;
updateShape();
}
public static function hide():void {
if (_instance == null) {
return;
}
_instance._hide();
}
public function _hide():void {
visible = false;
}
public static function move(x:Number, y:Number):void {
if (_instance == null) {
return;
}
_instance._move(x, y);
}
public function _move(x:Number, y:Number):void {
this.x = (x+this.width>stage.stageWidth)?stage.stageWidth-this.width:x;
this.y = y - this.height;
}
private function changeHandler(event:Event):void {
updateShape();
}
private function updateShape():void {
var w:Number = _label.textWidth + 8;
var h:Number = 23;
graphics.clear();
graphics.beginFill(0x6F0A13);
graphics.drawRoundRect(0, 0, w, h, 7, 7);
graphics.endFill();
graphics.beginFill(0xFFFFE1);
graphics.drawRoundRect(1, 1, w-2, h-2, 7, 7);
graphics.endFill();
}
private function getBitmapFilter():BitmapFilter {
var color:Number = 0x000000;
var alpha:Number = 0.3;
var blurX:Number = 5;
var blurY:Number = 5;
var strength:Number = 2;
var inner:Boolean = false;
var knockout:Boolean = false;
var quality:Number = BitmapFilterQuality.HIGH;
return new GlowFilter(color,
alpha,
blurX,
blurY,
strength,
quality,
inner,
knockout);
}
}
}

/** * @author Kinglong * @version 0.1 */ package project.happy9.browse { import flash.display.*; import flash.events.*; import flash.text.*; import flash.utils.*; import flash.filters.*; public class ToolTip extends Sprite { private static var _instance:ToolTip; private var _label:TextField; public function ToolTip(base:Sprite) { _label = new TextField(); _label.autoSize = TextFieldAutoSize.LEFT; _label.textColor = 0x333333; _label.text = " "; _label.selectable = false; _label.x = 3; _label.y = 2; addChild(_label); filters = [getBitmapFilter()]; base.addChild(this); _instance = this; _hide(); } public static function show(lbl:String):void { if (_instance == null) { return; } _instance._show(lbl); } public function _show(lbl:String):void { visible = true; _label.text = lbl; updateShape(); } public static function hide():void { if (_instance == null) { return; } _instance._hide(); } public function _hide():void { visible = false; } public static function move(x:Number, y:Number):void { if (_instance == null) { return; } _instance._move(x, y); } public function _move(x:Number, y:Number):void { this.x = (x+this.width>stage.stageWidth)?stage.stageWidth-this.width:x; this.y = y - this.height; } private function changeHandler(event:Event):void { updateShape(); } private function updateShape():void { var w:Number = _label.textWidth + 8; var h:Number = 23; graphics.clear(); graphics.beginFill(0x6F0A13); graphics.drawRoundRect(0, 0, w, h, 7, 7); graphics.endFill(); graphics.beginFill(0xFFFFE1); graphics.drawRoundRect(1, 1, w-2, h-2, 7, 7); graphics.endFill(); } private function getBitmapFilter():BitmapFilter { var color:Number = 0x000000; var alpha:Number = 0.3; var blurX:Number = 5; var blurY:Number = 5; var strength:Number = 2; var inner:Boolean = false; var knockout:Boolean = false; var quality:Number = BitmapFilterQuality.HIGH; return new GlowFilter(color, alpha, blurX, blurY, strength, quality, inner, knockout); } } }

调用实例

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/**
* @author Kinglong
* @version 0.1
*/
package project.test {
import flash.display.*;
import flash.events.*;
import fl.controls.*;
import project.happy9.browse.ToolTip;
public class TestToolTip extends Sprite{
private var _names:Array = ["我是按钮A","我是按钮B","我是按钮C","我是按钮D"];
public function TestToolTip() {
for (var i:uint = 0; i < _names.length; i++ ) {
var button:Button = new Button();
button.label = "button_" + i;
button.move(2,30*i+10);
button.addEventListener(MouseEvent.MOUSE_OVER, overHandler);
button.addEventListener(MouseEvent.MOUSE_OUT, outHandler);
button.addEventListener(MouseEvent.MOUSE_MOVE, moveHandler);
addChild(button);
}
new ToolTip(this);
}
private function overHandler(event:MouseEvent):void{
var arr:Array = event.target.label.split("_");
ToolTip.show(_names[int(arr[1])]);
ToolTip.move(event.stageX,event.stageY);
}
private function outHandler(event:MouseEvent):void {
ToolTip.hide();
}
private function moveHandler(event:MouseEvent):void {
ToolTip.move(event.stageX,event.stageY);
}
}
}

/** * @author Kinglong * @version 0.1 */ package project.test { import flash.display.*; import flash.events.*; import fl.controls.*; import project.happy9.browse.ToolTip; public class TestToolTip extends Sprite{ private var _names:Array = ["我是按钮A","我是按钮B","我是按钮C","我是按钮D"]; public function TestToolTip() { for (var i:uint = 0; i < _names.length; i++ ) { var button:Button = new Button(); button.label = "button_" + i; button.move(2,30*i+10); button.addEventListener(MouseEvent.MOUSE_OVER, overHandler); button.addEventListener(MouseEvent.MOUSE_OUT, outHandler); button.addEventListener(MouseEvent.MOUSE_MOVE, moveHandler); addChild(button); } new ToolTip(this); } private function overHandler(event:MouseEvent):void{ var arr:Array = event.target.label.split("_"); ToolTip.show(_names[int(arr[1])]); ToolTip.move(event.stageX,event.stageY); } private function outHandler(event:MouseEvent):void { ToolTip.hide(); } private function moveHandler(event:MouseEvent):void { ToolTip.move(event.stageX,event.stageY); } } }

演示效果

应"求救"的要求，我把相关文件打包，以提供下载
http://www.klstudio.com/demo/test/tooltip.rar