[AS3]提示信息类-ToolTip

[AS3]提示信息类-ToolTip

来源：Kinglong's blog 作者：Kinglong 2008-03-08 【大中小】

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

/**
* @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

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