Adobe Flash Professional CS3 Manuel d'utilisateur télécharger pdf (Page 79)

FLASH CS3

User Guide

Yo u c a n u s e t h e _root alias to refer to the main Timeline of the current level. For the main Timeline, the _root alias

stands for

_level0 whentargetedbyamovieclipalsoon_level0.Foradocumentloadedinto_level5, _root is

equal to

_level5 when targeted by a movie clip also on level 5. For example, if the movie clips southcarolina and

florida are both loaded into the same level, an action called from the instance southcarolina could use the

following absolute path to target the instance

florida:

_root.eastCoast.florida

About relative paths

A relative path depends on the relationship between the controlling Timeline and the target Timeline. Relative paths

can address targets only within their own level of Flash Player. For example, you can’t use a relative path in an action

_level0 that targets a Timeline on _level5.

In a relative path, use the keyword

this to refer to the current Timeline in the current level; use the _parent alias

to indicate the parent Timeline of the current Timeline. You can use the

_parent aliasrepeatedlytogouponelevel

in the movie clip hierarchy within the same level of Flash Player. For example,

_parent._parent controls a movie

clip up two levels in the hierarchy. The topmost Timeline at any level in Flash Player is the only Timeline with a

_parent value that is undefined.

An action in the Timeline of the instance

charleston, located one level below southcarolina, could use the

following target path to target the instance

southcarolina:

_parent

To target the instance eastCoast (one level up) from an action in charleston, you could use the following relative path:

_parent._parent

To target the instance

atlanta

from an action in the Timeline of

charleston

, you could use the following relative path:

_parent._parent.georgia.atlanta

Relative paths are useful for reusing scripts. For example, you could attach the following script to a movie clip that

magnifies its parent by 150%:

onClipEvent (load) {_parent._xscale = 150;_parent._yscale = 150;

}

You can reuse this script by attaching it to any movie clip instance.

Note: Flash Lite 1.0 and 1.1 support attaching scripts only to buttons. Attaching scripts to movie clips is not supported.

Whetheryouuseanabsoluteorarelativepath,youidentifyavariableinaTimelineorapropertyofanobjectwith

adot(

.) followed by the name of the variable or property. For example, the following statement sets the variable name

in the instance form to the value "Gilbert":

_root.form.name = "Gilbert";

Using absolute and relative target paths

You can use ActionScript to send messages from one timeline to another. The timeline that contains the action is

called the controlling timeline,andthetimelinethatreceivestheactioniscalledthetarget timeline. For example, there

could be an action on the last frame of one timeline that tells another timeline to play. To refer to a target timeline,

you must use a target path, which indicates the location of a movie clip in the display list.

The following example shows the hierarchy of a document named westCoast on level 0, which contains three movie

clips:

california, oregon, and washington. Each of these movie clips in turn contains two movie clips.

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 526 527

Commentaires sur ces manuels

Pas de commentaire

Adobe Flash Professional CS3 Manuel d'utilisateur Page 79

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Adobe Flash Professional CS3