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70 lines
1.7 KiB
JavaScript
70 lines
1.7 KiB
JavaScript
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/*
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DynAPI Distribution
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Fader Animation Extension
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The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
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requires: DynLayer
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*/
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Fader = {}; // used by dynapi.library
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p = DynLayer.prototype;
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p._fadeMode = '';
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p.fadeIn = function(inc,ms){
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this._opacity=0;
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this._fadeMode='in';
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this.fadeTo(100,(inc||4),ms);
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};
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p.fadeOut = function(inc,ms){
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this._opacity=100;
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this._fadeMode='out';
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this.fadeTo(0,inc||4,ms);
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};
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// Fades an object to "opacity" by "inc" increments in every "ms" millisenconds
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p.fadeTo = function(opacity,inc,ms){
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if(this._opacity==null) this._opacity=100;
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inc=(inc)? Math.abs(inc):5;
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this._fadeMs=(ms)? ms:50;
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if (this._opacity>opacity) inc*=-1;
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this._fadeInc=inc;
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this._fadeToOpacity = opacity;
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this._fadeTimeout=window.setTimeout(this+'._fade()',this._fadeMs);
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};
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p._fade = function(){
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var ua=dynapi.ua;
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var fm=this._fadeMode;
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var inc = this._fadeInc;
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var opac = this._opacity;
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var fopac = this._fadeToOpacity;
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opac+=inc;
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if ((inc<0 && opac<=fopac)|| (inc>0 && opac>=fopac)) opac=fopac;
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this._opacity=opac;
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if(!ua.def) this.setVisible((opac>0)? true:false);
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else if(ua.dom && this.css){
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if(opac>1 && this.visible==false) this.setVisible(true);
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if(ua.ie) this.css.filter='alpha(opacity=' + opac + ')';
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else this.css.MozOpacity = parseInt(opac)/100;
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}
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if(opac!=fopac) this._fadeTimeout=window.setTimeout(this+'._fade()',this._fadeMs);
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else {
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this._fadeMode='';
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window.clearTimeout(this._fadeTimeout);
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this.invokeEvent('fade'+fm);
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}
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};
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p.getOpacity = function(){
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if (this._opacity ||(this._opacity == 0)) return this._opacity;
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else return this._opacity=100;
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};
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p.setOpacity = function(n){
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var ua=dynapi.ua;
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if(n>100) n=100;
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else if(n<0)n=0;
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this._opacity = n;
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this.fadeTo(n);
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};
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