Barre de scroll avec un texte dynamique
Salam alikoum :-)
Je suis débutant en AS, je voulais construire, une barre de scroll, en utilisant les deux classes :
VirtualScroller
Code:
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|
class VirtualScroller
{
//---------//
//Variables//
//---------//
private var _sizeContent:Number; //size content
private var _sizeScroller:Number; //size scroller
private var _sizeMask:Number; //size mask
private var _sizePlaceScroller:Number; //size place scroller
private var _realSizeContent:Number; //calculated size
private var _realSizeScroller:Number; //calculated size
private var _currentPlaceContent:Number; //current place content
private var _currentPlaceScroller:Number; //current place scroller
private var _ratioContent:Number; //ratio of the content
/**
* Called when a content is scrolled.
* <p>Prototype of the function :<br>
* <code>onScroll = function(posContent:Number, posScroller:Number):Void { ... }</code></p>
*/
public var onScroll:Function;
//-----------//
//Constructor//
//-----------//
/**
* Create a new VirtualScroller.
*
* @param sizeContent Size of the content that must be scrolled.
* @param sizeMask Size of the mask of the content.
* @param sizeScroller Size of the scroller.
* @param sizePlaceScroller Size of the place of the scroller (by default {@code sizeMask}).
* @throws Error If {@code sizeContent} is {@code null} or less than 0.
* @throws Error If {@code sizeMask} is {@code null} or less than 0.
* @throws Error If {@code sizeScroller} is {@code null} or less than 0.
*/
public function VirtualScroller(sizeContent:Number, sizeMask:Number,
sizeScroller:Number, sizePlaceScroller:Number)
{
if (sizeContent == null)
{
throw new Error(this+".<init> : sizeContent is undefined");
}
if (sizeContent < 0)
{
throw new Error(this+".<init> : sizeContent is invalid ("+sizeContent+")");
}
if (sizeMask == null)
{
throw new Error(this+".<init> : sizeMask is undefined");
}
if (sizeMask < 0)
{
throw new Error(this+".<init> : sizeMask is invalid ("+sizeMask+")");
}
if (sizeScroller == null)
{
throw new Error(this+".<init> : sizeScroller is undefined");
}
if (sizeScroller < 0)
{
throw new Error(this+".<init> : sizeScroller is invalid ("+sizeScroller+")");
}
if (sizePlaceScroller == null || sizePlaceScroller < 0)
{
sizePlaceScroller = sizeMask;
}
//init
_sizeScroller = sizeScroller;
_sizeMask = sizeMask;
_sizePlaceScroller = sizePlaceScroller;
_sizeContent = sizeContent;
_realSizeContent = sizeContent-sizeMask;
_realSizeScroller = sizePlaceScroller-sizeScroller;
_currentPlaceContent = 0;
_currentPlaceScroller = 0;
_ratioContent = 1;
onScroll = null;
}
//--------------//
//Public methods//
//--------------//
/**
* Get the size of the content.
*
* @return The size of the content.
*/
public function getContentSize(Void):Number
{
return _sizeContent;
}
/**
* Get the size of the scroller.
*
* @return The size of the scroller.
*/
public function getScrollerSize(Void):Number
{
return _sizeScroller;
}
/**
* Get the size of the mask.
*
* @return The size of the mask.
*/
public function getMaskSize(Void):Number
{
return _sizeMask;
}
/**
* Get the size of the place of the scroller.
*
* @return The size of the place of the scroller.
*/
public function getPlaceScrollerSize(Void):Number
{
return _sizePlaceScroller;
}
/**
* Get the virtually place of the scroller.
*
* @return The current place of the scroller.
*/
public function getCurrentPlaceScroller(Void):Number
{
return _currentPlaceScroller;
}
/**
* Get the virtually place of the content.
*
* @param The current place of the content.
*/
public function getCurrentPlaceContent(Void):Number
{
return _currentPlaceContent;
}
/**
* Get if the {@code VirtualScroller} can be scrolled or not.
* <p>A non scrollable {@code VirtualScroller} means that the mask is
* bigger thant the content (so the content is already totaly visible) or
* that the size of the scroller is bigger than the place it has for scrolling.</p>
*
* @return {@code true} if the {@code VirtualScroller} is scrollable.
*/
public function isScrollable(Void):Boolean
{
return (_sizeMask < _sizeContent && _sizeScroller < _sizePlaceScroller);
}
/**
* Get the maximum value for the {@link #moveContentTo(Number)} method.
* <p>Note that the minimal value is 0.</p>
*
* @return The maximum value for the content move.
*/
public function getMaxMoveContent(Void):Number
{
return _realSizeContent;
}
/**
* Get the maximum value for the {@link #moveScrollerTo(Number)} method.
* <p>Note that the minimal value is 0.</p>
*
* @return The maximum value for the scroller move.
*/
public function getMaxMoveScroller(Void):Number
{
return _realSizeScroller;
}
/**
* Move the content (relative).
* <p>This method simply call the {@link moveContentTo(Number)} method,
* taking the current place and adding {@code append}.</p>
* <p>Note that if the current place of the content adding {@code append}
* is bigger than {@link @getMaxMoveContent()}, no {@code Error} is thrown,
* it will go to the max position.</p>
*
* @param append The new relative place.
*/
public function appendContent(append:Number):Void
{
var np:Number = _currentPlaceContent+append;
if (np > getMaxMoveContent())
{
np = getMaxMoveContent();
}
else if (np < 0)
{
np = 0;
}
moveContentTo(np);
}
/**
* Move the scroller (relative).
* <p>This method simply call the {@link moveScrollerTo(Number)} method,
* taking the current place and adding {@code append}.</p>
* <p>Note that if the current place of the scroller adding {@code append}
* is bigger than {@link @getMaxMoveScroller()}, no {@code Error} is thrown,
* it will go to the max position.</p>
*
* @param append The new relative place.
*/
public function appendScroller(append:Number):Void
{
var np:Number = _currentPlaceScroller+append;
if (np > getMaxMoveScroller())
{
np = getMaxMoveScroller();
}
else if (np < 0)
{
np = 0;
}
moveScrollerTo(np);
}
/**
* Move the content (absolute).
* <p>This method call the {@link onScroll} function with the associated
* parameters and adjust the scroller position.</p>
*
* @param target The new place of the content.
* @throws Error If {@code target} is less than 0 or bigger
* than {@link getMaxMoveContent()}.
*/
public function moveContentTo(target:Number):Void
{
//check
if (target < 0 || target > getMaxMoveContent())
{
throw new Error(this+".moveContentTo : invalid target ("+target+")");
}
var ratio:Number = target / getMaxMoveContent();
_currentPlaceContent = target;
_currentPlaceScroller = getMaxMoveScroller()*ratio;
//scroll event
onScroll(_currentPlaceContent*_ratioContent, _currentPlaceScroller);
}
/**
* Move the scroller (absolute).
* <p>This method call the {@link onScroll} function with the associated
* parameters and adjust the content position.</p>
*
* @param target The new place of the scroller.
* @throws Error If {@code target} is less than 0 or bigger
* than {@link getMaxMoveScroller()}.
*/
public function moveScrollerTo(target:Number):Void
{
//check
if (target < 0 || target > getMaxMoveScroller())
{
throw new Error(this+".moveScrollerTo : invalid target ("+target+")");
}
var ratio:Number = target / getMaxMoveScroller();
_currentPlaceContent = getMaxMoveContent()*ratio;
_currentPlaceScroller = target;
//scroll event
onScroll(_currentPlaceContent*_ratioContent, _currentPlaceScroller);
}
/**
* Get the ratio.
*
* @return The ratio.
*/
public function getRatio(Void):Number
{
return _ratioContent;
}
/**
* Set the ratio.
* <p>The ratio is used when dispatching the {@link onScroll(Number,Number)}
* event for the new content position. It is very useful to have directly
* the inverted position (ratio = -1).</p>
* <p>By default, the ratio is set to 1.</p>
*
* @param ratio The new ratio.
*/
public function setRatio(ratio:Number):Void
{
_ratioContent = ratio;
}
/**
* Represent the current instance into a String.
*
* @return A String representing the VirtualScroller instance.
*/
public function toString(Void):String
{
return "VirtualScroller";
}
} |
et GUIScroller
Code:
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import VirtualScroller;
/**
* Provides the methods of a GUIScroller.
*
* @author Tabin Cedric - thecaptain
* @since 8 dec. 2005
* @version 1.0
*/
class GUIScroller
{
//---------//
//Variables//
//---------//
private var _virtualScroller:VirtualScroller; //the scroller
private var _content:MovieClip; //the content
private var _contentStart:Number; //start postiion of the content
private var _mask:MovieClip; //the mask
private var _arrowUP:MovieClip; //arrow up
private var _arrowDown:MovieClip; //arrow down
private var _scroller:MovieClip; //the scroller
private var _scrollerStart:Number; //start position of the scroller
//-----------//
//Constructor//
//-----------//
/**
* Create a new GUIScroller.
*
* @param content The clip content.
* @param mask The clip mask of the content.
* @Param arrowUp The arrow up.
* @param arrowDown The arrow down.
* @param scroller The clip scroller.
* @param sizePlaceScroller The place for the scroller
*/
public function GUIScroller(content:MovieClip, mask:MovieClip,
arrowUP:MovieClip, arrowDown:MovieClip,
scroller:MovieClip, sizePlaceScroller:Number)
{
_content = content;
_contentStart = content._y;
_mask = mask;
_arrowUP = arrowUP;
_arrowDown = arrowDown;
_scroller = scroller;
_scrollerStart = _scroller._y;
_virtualScroller = new VirtualScroller(content._height, mask._height, scroller._height, sizePlaceScroller);
init();
}
//---------------//
//Private methods//
//---------------//
private function init(Void):Void
{
var me:GUIScroller = this;
//on scroll
_virtualScroller.setRatio(-1);
_virtualScroller.onScroll = function(posContent:Number, posScroller:Number):Void
{
me._content._y = posContent+me._contentStart;
me._scroller._y = posScroller+me._scrollerStart;
}
_arrowUP.onPress = function(Void):Void
{
me._virtualScroller.appendContent(-20);
}
_arrowDown.onPress = function(Void):Void
{
me._virtualScroller.appendContent(20);
}
_scroller.onPress = function(Void):Void
{
this.startDrag(false, this._x,
me._scrollerStart,
this._x,
me._virtualScroller.getMaxMoveScroller()+me._scrollerStart);
this.onEnterFrame = function(Void):Void
{
me._virtualScroller.moveScrollerTo(this._y-me._scrollerStart);
}
}
_scroller.onRelease = function(Void):Void
{
this.stopDrag();
this.onEnterFrame = null;
}
_scroller.onReleaseOutside = function(Void):Void
{
this.stopDrag();
this.onEnterFrame = null;
}
}
} |
avec le code sur la scène principale
Code:
var gu:GUIScroller = new GUIScroller(content_mc, mask_mc, arrowUp_mc, arrowDown_mc, scroller_mc, arrowDown_mc._y-(scroller_mc._y+scroller_mc._height)+30);
ça fonctionne trés bien , mais seulement mes amis, je voudrais avoir un texte dynamique dans le movie_clip lorsque j'insère un texte dynamique il n'apparait pas !!
J'ai vraiment besoin de ça, merci pour votre aide
