src/fx.js

   1 jQuery.fn.extend({
   2         show: function(speed,callback){
   3                 return speed ?
   4                         this.animate({
   5                                 height: "show", width: "show", opacity: "show"
   6                         }, speed, callback) :
   7
   8                         this.filter(":hidden").each(function(){
   9                                 this.style.display = this.oldblock ? this.oldblock : "";
  10                                 if ( jQuery.css(this,"display") == "none" )
  11                                         this.style.display = "block";
  12                         }).end();
  13         },
  14
  15         hide: function(speed,callback){
  16                 return speed ?
  17                         this.animate({
  18                                 height: "hide", width: "hide", opacity: "hide"
  19                         }, speed, callback) :
  20
  21                         this.filter(":visible").each(function(){
  22                                 this.oldblock = this.oldblock || jQuery.css(this,"display");
  23                                 if ( this.oldblock == "none" )
  24                                         this.oldblock = "block";
  25                                 this.style.display = "none";
  26                         }).end();
  27         },
  28
  29         // Save the old toggle function
  30         _toggle: jQuery.fn.toggle,
  31
  32         toggle: function( fn, fn2 ){
  33                 return jQuery.isFunction(fn) && jQuery.isFunction(fn2) ?
  34                         this._toggle( fn, fn2 ) :
  35                         fn ?
  36                                 this.animate({
  37                                         height: "toggle", width: "toggle", opacity: "toggle"
  38                                 }, fn, fn2) :
  39                                 this.each(function(){
  40                                         jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
  41                                 });
  42         },
  43
  44         slideDown: function(speed,callback){
  45                 return this.animate({height: "show"}, speed, callback);
  46         },
  47
  48         slideUp: function(speed,callback){
  49                 return this.animate({height: "hide"}, speed, callback);
  50         },
  51
  52         slideToggle: function(speed, callback){
  53                 return this.animate({height: "toggle"}, speed, callback);
  54         },
  55
  56         fadeIn: function(speed, callback){
  57                 return this.animate({opacity: "show"}, speed, callback);
  58         },
  59
  60         fadeOut: function(speed, callback){
  61                 return this.animate({opacity: "hide"}, speed, callback);
  62         },
  63
  64         fadeTo: function(speed,to,callback){
  65                 return this.animate({opacity: to}, speed, callback);
  66         },
  67
  68         animate: function( prop, speed, easing, callback ) {
  69                 var opt = jQuery.speed(speed, easing, callback);
  70
  71                 return this[ opt.queue === false ? "each" : "queue" ](function(){
  72                         opt = jQuery.extend({}, opt);
  73                         var hidden = jQuery(this).is(":hidden"), self = this;
  74
  75                         for ( var p in prop ) {
  76                                 if ( prop[p] == "hide" && hidden || prop[p] == "show" && !hidden )
  77                                         return jQuery.isFunction(opt.complete) && opt.complete.apply(this);
  78
  79                                 if ( p == "height" || p == "width" ) {
  80                                         // Store display property
  81                                         opt.display = jQuery.css(this, "display");
  82
  83                                         // Make sure that nothing sneaks out
  84                                         opt.overflow = this.style.overflow;
  85                                 }
  86                         }
  87
  88                         if ( opt.overflow != null )
  89                                 this.style.overflow = "hidden";
  90
  91                         opt.curAnim = jQuery.extend({}, prop);
  92
  93                         jQuery.each( prop, function(name, val){
  94                                 var e = new jQuery.fx( self, opt, name );
  95
  96                                 if ( /toggle|show|hide/.test(val) )
  97                                         e[ val == "toggle" ? hidden ? "show" : "hide" : val ]( prop );
  98                                 else {
  99                                         var parts = val.toString().match(/^([+-]?)([\d.]+)(.*)$/),
 100                                                 start = e.cur(true) || 0;
 101
 102                                         if ( parts ) {
 103                                                 end = parseFloat(parts[2]),
 104                                                 unit = parts[3] || "px";
 105
 106                                                 // We need to compute starting value
 107                                                 if ( unit != "px" ) {
 108                                                         self.style[ name ] = end + unit;
 109                                                         start = (end / e.cur(true)) * start;
 110                                                         self.style[ name ] = start + unit;
 111                                                 }
 112
 113                                                 // If a +/- token was provided, we're doing a relative animation
 114                                                 if ( parts[1] )
 115                                                         end = ((parts[1] == "-" ? -1 : 1) * end) + start;
 116
 117                                                 e.custom( start, end, unit );
 118                                         } else
 119                                                 e.custom( start, val, "" );
 120                                 }
 121                         });
 122
 123                         // For JS strict compliance
 124                         return true;
 125                 });
 126         },
 127
 128         queue: function(type, fn){
 129                 if ( !fn ) {
 130                         fn = type;
 131                         type = "fx";
 132                 }
 133
 134                 if ( !arguments.length )
 135                         return queue( this[0], type );
 136
 137                 return this.each(function(){
 138                         if ( fn.constructor == Array )
 139                                 queue(this, type, fn);
 140                         else {
 141                                 queue(this, type).push( fn );
 142
 143                                 if ( queue(this, type).length == 1 )
 144                                         fn.apply(this);
 145                         }
 146                 });
 147         },
 148
 149         dequeue: function(type){
 150                 type = type || "fx";
 151
 152                 return this.each(function(){
 153                         var q = queue(this, type);
 154
 155                         q.shift();
 156
 157                         if ( q.length )
 158                                 q[0].apply( this );
 159                 });
 160         },
 161
 162         stop: function(){
 163                 var timers = jQuery.timers;
 164
 165                 return this.each(function(){
 166                         for ( var i = 0; i < timers.length; i++ )
 167                                 if ( timers[i].elem == this )
 168                                         timers.splice(i--, 1);
 169                 }).dequeue();
 170         }
 171
 172 });
 173
 174 function queue( elem, type, array ) {
 175         if ( !elem )
 176                 return;
 177
 178         if ( !elem.queue )
 179                 elem.queue = {};
 180
 181         if ( !elem.queue[type] )
 182                 elem.queue[type] = [];
 183
 184         if ( array )
 185                 elem.queue[type] = jQuery.makeArray(array);
 186
 187         return elem.queue[type];
 188 }
 189
 190 jQuery.extend({
 191
 192         speed: function(speed, easing, fn) {
 193                 var opt = speed && speed.constructor == Object ? speed : {
 194                         complete: fn || !fn && easing ||
 195                                 jQuery.isFunction( speed ) && speed,
 196                         duration: speed,
 197                         easing: fn && easing || easing && easing.constructor != Function && easing
 198                 };
 199
 200                 opt.duration = (opt.duration && opt.duration.constructor == Number ?
 201                         opt.duration :
 202                         { slow: 600, fast: 200 }[opt.duration]) || 400;
 203
 204                 // Queueing
 205                 opt.old = opt.complete;
 206                 opt.complete = function(){
 207                         jQuery(this).dequeue();
 208                         if ( jQuery.isFunction( opt.old ) )
 209                                 opt.old.apply( this );
 210                 };
 211
 212                 return opt;
 213         },
 214
 215         easing: {
 216                 linear: function( p, n, firstNum, diff ) {
 217                         return firstNum + diff * p;
 218                 },
 219                 swing: function( p, n, firstNum, diff ) {
 220                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 221                 }
 222         },
 223
 224         timers: [],
 225
 226         fx: function( elem, options, prop ){
 227                 this.options = options;
 228                 this.elem = elem;
 229                 this.prop = prop;
 230
 231                 if ( !options.orig )
 232                         options.orig = {};
 233         }
 234
 235 });
 236
 237 jQuery.fx.prototype = {
 238
 239         // Simple function for setting a style value
 240         update: function(){
 241                 if ( this.options.step )
 242                         this.options.step.apply( this.elem, [ this.now, this ] );
 243
 244                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 245
 246                 // Set display property to block for height/width animations
 247                 if ( this.prop == "height" || this.prop == "width" )
 248                         this.elem.style.display = "block";
 249         },
 250
 251         // Get the current size
 252         cur: function(force){
 253                 if ( this.elem[this.prop] != null && this.elem.style[this.prop] == null )
 254                         return this.elem[ this.prop ];
 255
 256                 var r = parseFloat(jQuery.curCSS(this.elem, this.prop, force));
 257                 return r && r > -10000 ? r : parseFloat(jQuery.css(this.elem, this.prop)) || 0;
 258         },
 259
 260         // Start an animation from one number to another
 261         custom: function(from, to, unit){
 262                 this.startTime = (new Date()).getTime();
 263                 this.start = from;
 264                 this.end = to;
 265                 this.unit = unit || this.unit || "px";
 266                 this.now = this.start;
 267                 this.pos = this.state = 0;
 268                 this.update();
 269
 270                 var self = this;
 271                 function t(){
 272                         return self.step();
 273                 }
 274
 275                 t.elem = this.elem;
 276
 277                 jQuery.timers.push(t);
 278
 279                 if ( jQuery.timers.length == 1 ) {
 280                         var timer = setInterval(function(){
 281                                 var timers = jQuery.timers;
 282
 283                                 for ( var i = 0; i < timers.length; i++ )
 284                                         if ( !timers[i]() )
 285                                                 timers.splice(i--, 1);
 286
 287                                 if ( !timers.length )
 288                                         clearInterval( timer );
 289                         }, 13);
 290                 }
 291         },
 292
 293         // Simple 'show' function
 294         show: function(){
 295                 // Remember where we started, so that we can go back to it later
 296                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 297                 this.options.show = true;
 298
 299                 // Begin the animation
 300                 this.custom(0, this.cur());
 301
 302                 // Make sure that we start at a small width/height to avoid any
 303                 // flash of content
 304                 if ( this.prop == "width" || this.prop == "height" )
 305                         this.elem.style[this.prop] = "1px";
 306
 307                 // Start by showing the element
 308                 jQuery(this.elem).show();
 309         },
 310
 311         // Simple 'hide' function
 312         hide: function(){
 313                 // Remember where we started, so that we can go back to it later
 314                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 315                 this.options.hide = true;
 316
 317                 // Begin the animation
 318                 this.custom(this.cur(), 0);
 319         },
 320
 321         // Each step of an animation
 322         step: function(){
 323                 var t = (new Date()).getTime();
 324
 325                 if ( t > this.options.duration + this.startTime ) {
 326                         this.now = this.end;
 327                         this.pos = this.state = 1;
 328                         this.update();
 329
 330                         this.options.curAnim[ this.prop ] = true;
 331
 332                         var done = true;
 333                         for ( var i in this.options.curAnim )
 334                                 if ( this.options.curAnim[i] !== true )
 335                                         done = false;
 336
 337                         if ( done ) {
 338                                 if ( this.options.display != null ) {
 339                                         // Reset the overflow
 340                                         this.elem.style.overflow = this.options.overflow;
 341
 342                                         // Reset the display
 343                                         this.elem.style.display = this.options.display;
 344                                         if ( jQuery.css(this.elem, "display") == "none" )
 345                                                 this.elem.style.display = "block";
 346                                 }
 347
 348                                 // Hide the element if the "hide" operation was done
 349                                 if ( this.options.hide )
 350                                         this.elem.style.display = "none";
 351
 352                                 // Reset the properties, if the item has been hidden or shown
 353                                 if ( this.options.hide || this.options.show )
 354                                         for ( var p in this.options.curAnim )
 355                                                 jQuery.attr(this.elem.style, p, this.options.orig[p]);
 356                         }
 357
 358                         // If a callback was provided, execute it
 359                         if ( done && jQuery.isFunction( this.options.complete ) )
 360                                 // Execute the complete function
 361                                 this.options.complete.apply( this.elem );
 362
 363                         return false;
 364                 } else {
 365                         var n = t - this.startTime;
 366                         this.state = n / this.options.duration;
 367
 368                         // Perform the easing function, defaults to swing
 369                         this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
 370                         this.now = this.start + ((this.end - this.start) * this.pos);
 371
 372                         // Perform the next step of the animation
 373                         this.update();
 374                 }
 375
 376                 return true;
 377         }
 378
 379 };
 380
 381 jQuery.fx.step = {
 382         scrollLeft: function(fx){
 383                 fx.elem.scrollLeft = fx.now;
 384         },
 385
 386         scrollTop: function(fx){
 387                 fx.elem.scrollTop = fx.now;
 388         },
 389
 390         opacity: function(fx){
 391                 jQuery.attr(fx.elem.style, "opacity", fx.now);
 392         },
 393
 394         _default: function(fx){
 395                 fx.elem.style[ fx.prop ] = fx.now + fx.unit;
 396         }
 397 };