fx/fx.js

   1 $.speed = function(s,o) {
   2         if ( o && o.constructor == Function ) { o = { onComplete: o }; }
   3         o = o || {};
   4         var ss = {"crawl":1200,"xslow":850,"slow":600,"medium":400,"fast":200,"xfast":75,"normal":400};
   5         o.duration = typeof s == "number" ? s : ss[s] || 400;
   6         return o;
   7 };
   8
   9 $.fn.hide = function(a,o) {
  10         o = $.speed(a,o);
  11         return a ? this.each(function(){
  12                 new $.fx.FadeSize(this,o).hide();
  13         }) : this._hide();
  14 };
  15
  16 $.fn.show = function(a,o) {
  17         o = $.speed(a,o);
  18         return a ? this.each(function(){
  19                 new $.fx.FadeSize(this,o).show();
  20         }) : this._show();
  21 };
  22
  23 $.fn.slideDown = function(a,o) {
  24         o = $.speed(a,o);
  25         return this.each(function(){
  26                 new $.fx.Resize(this,o).show("height");
  27         });
  28 };
  29
  30 $.fn.slideUp = function(a,o) {
  31         o = $.speed(a,o);
  32         return this.each(function(){
  33                 new $.fx.Resize(this,o).hide("height");
  34         });
  35 };
  36
  37 $.fn.fadeOut = function(a,o) {
  38         o = $.speed(a,o);
  39         return a ? this.each(function(){
  40                 new $.fx.Opacity(this,o,1).hide();
  41         }) : this._hide();
  42 };
  43
  44 $.fn.fadeIn = function(a,o) {
  45         o = $.speed(a,o);
  46         return a ? this.each(function(){
  47                 new $.fx.Opacity(this,o,1).show();
  48         }) : this._show();
  49 };
  50
  51 $.fn.fadeTo = function(a,ev,o) {
  52         o = $.speed(a,o);
  53         return a ? this.each(function(){
  54                 ef = new $.fx.Opacity(this,o);
  55                 ef.custom(ef.cur(),parseFloat(ev));
  56                 ef.show();
  57         }) : this._show();
  58 };
  59
  60 $.fn.center = function(f) {
  61         return this.each(function(){
  62                 if ( !f && this.nodeName == 'IMG' &&
  63                                  !this.offsetWidth && !this.offsetHeight ) {
  64                         var self = this;
  65                         setTimeout(function(){
  66                                 $(self).center(true);
  67                         }, 13);
  68                 } else {
  69                         var s = this.style;
  70                         var p = this.parentNode;
  71                         if ( $.css(p,"position") == 'static' ) {
  72                                 p.style.position = 'relative';
  73                         }
  74                         s.position = 'absolute';
  75                         s.left = (($.css(p,"width") - $.css(this,"width"))/2) + "px";
  76                         s.top = (($.css(p,"height") - $.css(this,"height"))/2) + "px";
  77                 }
  78   });
  79 };
  80
  81 $.setAuto = function(e,p) {
  82         var a = e.style[p];
  83         var o = $.css(e,p);
  84         e.style[p] = 'auto';
  85         var n = $.css(e,p);
  86         if ( o != n ) {
  87                 e.style[p] = a;
  88         }
  89 };
  90
  91 /*
  92  * I originally wrote fx() as a clone of moo.fx and in the process
  93  * of making it small in size the code became illegible to sane
  94  * people. You've been warned.
  95  */
  96
  97 $.fx = function(el,op,ty){
  98
  99         var z = this;
 100
 101         // The users options
 102         z.o = {
 103                 duration: (op && op.duration) || 400,
 104                 onComplete: (op && op.onComplete) || op
 105         };
 106
 107         // The element
 108         z.el = el;
 109
 110         // The styles
 111         var y = z.el.style;
 112
 113         // Simple function for setting a style value
 114         z.a = function(){
 115                 z.el.style[ty] = z.now+'px';
 116         };
 117
 118         // Figure out the maximum number to run to
 119         z.max = function(){return z.el["$$orig"+ty]||z.cur();};
 120
 121         // Get the current size
 122         z.cur = function(){return $.css(z.el,ty);};
 123
 124         // Start an animation from one number to another
 125         z.custom = function(from,to){
 126                 z.startTime = (new Date()).getTime();
 127                 z.now = from;
 128                 z.a();
 129
 130                 z.timer = setInterval(function(){
 131                         z.step(from, to);
 132                 }, 13);
 133         };
 134
 135         // Simple 'show' function
 136         z.show = function(){
 137                 y.display = "block";
 138                 z.o.auto = true;
 139                 z.custom(0,z.max());
 140         };
 141
 142         // Simple 'hide' function
 143         z.hide = function(){
 144                 // Remember where we started, so that we can go back to it later
 145                 z.el["$$orig"+ty] = this.cur();
 146
 147                 // Begin the animation
 148                 z.custom(z.cur(),0);
 149         };
 150
 151         // Toggle between showing and hiding an element
 152         z.toggle = function(){
 153                 if ( z.cur() > 0 ) {
 154                         z.hide();
 155                 } else {
 156                         z.show();
 157                 }
 158         };
 159
 160         // Remember  the overflow of the element
 161         z.oldOverflow = y.overflow;
 162
 163         // Make sure that nothing sneaks out
 164         y.overflow = "hidden";
 165
 166         // Each step of an animation
 167         z.step = function(firstNum, lastNum){
 168                 var t = (new Date()).getTime();
 169
 170                 if (t > z.o.duration + z.startTime) {
 171                         // Stop the timer
 172                         clearInterval(z.timer);
 173                         z.timer = null;
 174
 175                         // Reset the overflow
 176                         y.overflow = z.oldOverflow;
 177
 178                         // If the element is, effectively, hidden - hide it
 179                         if( y.height == "0px" || y.width == "0px" ) {
 180                                 y.display = "none";
 181                         }
 182
 183                         // If the element was shown, and not using a custom number,
 184                         // set its height and width to auto
 185                         if ( ty != "opacity" && z.o.auto ) {
 186                                 $.setAuto( z.el, 'height' );
 187                                 $.setAuto( z.el, 'width' );
 188                         }
 189
 190                         // If a callback was provided, execute it
 191                         if( z.o.onComplete.constructor == Function ) {
 192                                 $.apply( z.el, z.onComplete );
 193                         }
 194                 } else {
 195                         // Figure out where in the animation we are and set the number
 196                         var p = (t - this.startTime) / z.o.duration;
 197                         z.now = ((-Math.cos(p*Math.PI)/2) + 0.5) * (lastNum-firstNum) + firstNum;
 198
 199                         // Perform the next step of the animation
 200                         z.a();
 201                 }
 202         };
 203
 204 };
 205
 206 $.fx.fn = ["show","hide","toggle"];
 207 $.fx.ty = ["Height","Width","Left","Top"];
 208
 209 (function(){
 210         for(var $i in $.fx.ty){(function(){
 211                 var c = $.fx.ty[$i];
 212                 $.fx[c] = function(a,b){
 213                         return new $.fx(a,b,c.toLowerCase());
 214                 };
 215         })();}
 216 })();
 217
 218 $.fx.Opacity = function(a,b,sv){
 219         var o = new $.fx(a,b,"opacity");
 220         o.cur = function(){return parseFloat(o.el.style.opacity);};
 221         o.a = function() {
 222                 var e = o.el.style;
 223                 if (o.now == 1) { o.now = 0.9999; }
 224                 if (window.ActiveXObject) {
 225                         e.filter = "alpha(opacity=" + o.now*100 + ")";
 226                 }
 227                 e.opacity = o.now;
 228         };
 229         o.io = o.now = (sv || o.cur());
 230         o.a();
 231         return o;
 232 };
 233
 234 $.fx.Resize = function(e,o){
 235         var z = this;
 236         var h = new $.fx.Height(e,o);
 237         if(o) { o.onComplete = null; }
 238         var w = new $.fx.Width(e,o);
 239         function c(a,b,d){return (!a||a==d||b==d);}
 240         for(var i in $.fx.fn){(function(){
 241                 var j = $.fx.fn[i];
 242                 z[j] = function(a,b){
 243                         if(c(a,b,"height")) { h[j](); }
 244                         if(c(a,b,"width")) { w[j](); }
 245                 };
 246         })();}
 247 };
 248
 249 $.fx.FadeSize = function(e,o){
 250         var z = this;
 251         var r = new $.fx.Resize(e,o);
 252         if(o) { o.onComplete = null; }
 253         var p = new $.fx.Opacity(e,o,1);
 254         for(var i in $.fx.fn){(function(){
 255                 var j = $.fx.fn[i];
 256                 z[j] = function(a,b){p[j]();r[j](a,b);};
 257         })();}
 258 };