Flex學習筆記_06 使用行為對象和動畫效果_ 放縮
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6.3.2 放縮效果和調整大小效果
Zoom 放縮效果 對對象進行放大或者縮小操作，是通過改變對象的水平比例scaleX 和垂直比例scaleY 來實現的。
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<?
xml
?
version
=
"1.0"
?
encoding
=
"utf-8"
?>
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<
mx:Application
?
xmlns:mx
=
"http://www.adobe.com/2006/mxml"
?
layout
=
"absolute"
>
??
-
????
<
mx:Style
?
source
=
"style.css"
?
/>
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-
????
<
mx:Script
>
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-
????????
<![CDATA[
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????????????import?mx.effects.Zoom;
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???????????
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????????????internal?function?zoomCanvas():void{
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????????????????var?newZoom:Zoom?=?new?Zoom();
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????????????????newZoom.zoomHeightFrom?=0.01;
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????????????????newZoom.zoomWidthFrom?=?0.01;
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????????????????newZoom.originX?=?0;
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????????????????newZoom.originY?=?0;
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????????????????newZoom.target?=?Canvas_1;
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????????????????newZoom.duration?=?2000;
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????????????????newZoom.play();
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????????????}
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????????]]>
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????
</
mx:Script
>
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??? ??
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????
<
mx:Canvas
?
id
=
"Canvas_1"
?
styleName
=
"box"
?
x
=
"48"
?
y
=
"40"
?
width
=
"200"
?
height
=
"200"
?
>
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????????
<
mx:Text
?
x
=
"15"
?
y
=
"37"
?
text
=
"文本，請注意放大過程中文本的變化"
?
width
=
"166"
?
height
=
"82"
/>
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????
</
mx:Canvas
>
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????
<
mx:Button
?
x
=
"48"
?
y
=
"277"
?
label
=
"放大"
?
click
=
"zoomCanvas()"
/>
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</
mx:Application
>
??
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Style source="style.css" />
<mx:Script>
<![CDATA[
import mx.effects.Zoom;
internal function zoomCanvas():void{
var newZoom:Zoom = new Zoom();
newZoom.zoomHeightFrom =0.01;
newZoom.zoomWidthFrom = 0.01;
newZoom.originX = 0;
newZoom.originY = 0;
newZoom.target = Canvas_1;
newZoom.duration = 2000;
newZoom.play();
}
]]>
</mx:Script>
<mx:Canvas id="Canvas_1" styleName="box" x="48" y="40" width="200" height="200" >
<mx:Text x="15" y="37" text="文本，請注意放大過程中文本的變化" width="166" height="82"/>
</mx:Canvas>
<mx:Button x="48" y="277" label="放大" click="zoomCanvas()"/>
</mx:Application>
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始末位置的長寬比例 ：zoomWidthFrom、zoomWidthTo、zoomHeightFrom、zoomHeightTo 。取0-1的值。默認1
動畫的參照點坐標：originX 、originY。 默認以組件的中心點。
captureRollEvents：是否忽略動畫過程中的鼠標移上和移出動作。
Resize 調整大小 效果和 Zoom 相比，似乎相同，其實兩者區別很大。Resize 是重新確定對象的長寬屬性。會影響子元素。
始末位置的長寬：widthFrom、widthTo、heightFrom、heightTo
長寬的增量： widthBy、heightBy
如果指定了widthTo 則會忽略widthBy。沒有指定widthBy，則默認為當前的寬度。
hideChildreTargets：針對Panel組件，用來隱藏Panel組件的子級元素，同時臨時關閉Panel組件的自動調整功能，直到動畫結束后再重新恢復。這樣可以提搞性能。
?
-
<?
xml
?
version
=
"1.0"
?
encoding
=
"utf-8"
?>
??
-
<
mx:Application
?
xmlns:mx
=
"http://www.adobe.com/2006/mxml"
?
layout
=
"absolute"
>
??
-
????
<
mx:Style
?
source
=
"style.css"
?
/>
??
-
????
<
mx:Script
>
??
-
????????
<![CDATA[
?
-
????????????import?mx.effects.Resize;
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????????????import?mx.events.TweenEvent;
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????????????//鼠標動作
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????????????internal?function?resizeCanvas():void{
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????????????????//創建新的Resize對象
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????????????????var?newResize:Resize?=?new?Resize();
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????????????????//設定高度和寬度的起始值
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????????????????newResize.heightFrom?=?200;
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????????????????newResize.widthFrom?=?200;
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????????????????//高度的最終值
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????????????????newResize.heightTo?=?240;
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????????????????//寬度增加40相當于?widthTo?=?240
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????????????????newResize.widthBy?=?40;
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????????????????//指定要隱藏內部元素的Panel
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????????????????newResize.hideChildrenTargets?=?[Panel_1,Panel_2];
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????????????????newResize.target?=?Canvas_1;
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????????????????newResize.duration?=?2000;???
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????????????????//監聽動畫的結束事件???????????
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????????????????newResize.addEventListener(TweenEvent.TWEEN_END,EndHandler);???????????????
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????????????????Canvas_1.autoLayout?=?false;??//注釋掉這一句代碼然后運行程序，觀察差別
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????????????????newResize.play();
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????????????}
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????????????internal?function?EndHandler(evt:TweenEvent):void{
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????????????????Canvas_1.autoLayout?=?true;
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????????????}
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????????]]>
??
-
????
</
mx:Script
>
??
-
??? ??
-
????
<
mx:Canvas
?
id
=
"Canvas_1"
?
styleName
=
"box"
?
x
=
"26"
?
y
=
"40"
?
width
=
"200"
?
height
=
"200"
?
>
??
-
????????
<
mx:Text
?
x
=
"10"
?
y
=
"10"
?
text
=
"說明：調整大小效果"
?
width
=
"166"
?
height
=
"26"
/>
??
-
????????
<
mx:Panel
?
id
=
"Panel_1"
?
styleName
=
"imgPanel"
?
x
=
"10"
?
y
=
"33"
?
width
=
"80%"
?
height
=
"80%"
?
layout
=
"absolute"
?
title
=
"面板一"
>
??
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????????????
<
mx:Image
?
x
=
"0"
?
y
=
"0"
?
source
=
"tree.jpg"
/>
??
-
????????
</
mx:Panel
>
??
-
????
</
mx:Canvas
>
??
-
????
<
mx:Button
?
x
=
"26"
?
y
=
"293"
?
label
=
"放大"
?
click
=
"resizeCanvas()"
/>
??
-
????
<
mx:Panel
?
id
=
"Panel_2"
?
styleName
=
"imgPanel"
?
x
=
"279"
?
y
=
"40"
?
width
=
"134"
?
height
=
"129"
?
layout
=
"absolute"
?
title
=
"面板二"
>
??
-
????????
<
mx:Image
?
x
=
"0"
?
y
=
"0"
?
source
=
"tree.jpg"
/>
??
-
????
</
mx:Panel
>
??
-
</
mx:Application
>
??
Flex學習筆記_06 使用行為對象和動畫效果_ 放縮\調整大小效果
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