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effect-bounce.js (2608B)

      1 /*!
      2  * jQuery UI Effects Bounce 1.12.1
      3  * http://jqueryui.com
      4  *
      5  * Copyright jQuery Foundation and other contributors
      6  * Released under the MIT license.
      7  * http://jquery.org/license
      8  */
      9 
     10 //>>label: Bounce Effect
     11 //>>group: Effects
     12 //>>description: Bounces an element horizontally or vertically n times.
     13 //>>docs: http://api.jqueryui.com/bounce-effect/
     14 //>>demos: http://jqueryui.com/effect/
     15 
     16 ( function( factory ) {
     17 	if ( typeof define === "function" && define.amd ) {
     18 
     19 		// AMD. Register as an anonymous module.
     20 		define( [
     21 			"jquery",
     22 			"./effect"
     23 		], factory );
     24 	} else {
     25 
     26 		// Browser globals
     27 		factory( jQuery );
     28 	}
     29 }( function( $ ) {
     30 
     31 return $.effects.define( "bounce", function( options, done ) {
     32 	var upAnim, downAnim, refValue,
     33 		element = $( this ),
     34 
     35 		// Defaults:
     36 		mode = options.mode,
     37 		hide = mode === "hide",
     38 		show = mode === "show",
     39 		direction = options.direction || "up",
     40 		distance = options.distance,
     41 		times = options.times || 5,
     42 
     43 		// Number of internal animations
     44 		anims = times * 2 + ( show || hide ? 1 : 0 ),
     45 		speed = options.duration / anims,
     46 		easing = options.easing,
     47 
     48 		// Utility:
     49 		ref = ( direction === "up" || direction === "down" ) ? "top" : "left",
     50 		motion = ( direction === "up" || direction === "left" ),
     51 		i = 0,
     52 
     53 		queuelen = element.queue().length;
     54 
     55 	$.effects.createPlaceholder( element );
     56 
     57 	refValue = element.css( ref );
     58 
     59 	// Default distance for the BIGGEST bounce is the outer Distance / 3
     60 	if ( !distance ) {
     61 		distance = element[ ref === "top" ? "outerHeight" : "outerWidth" ]() / 3;
     62 	}
     63 
     64 	if ( show ) {
     65 		downAnim = { opacity: 1 };
     66 		downAnim[ ref ] = refValue;
     67 
     68 		// If we are showing, force opacity 0 and set the initial position
     69 		// then do the "first" animation
     70 		element
     71 			.css( "opacity", 0 )
     72 			.css( ref, motion ? -distance * 2 : distance * 2 )
     73 			.animate( downAnim, speed, easing );
     74 	}
     75 
     76 	// Start at the smallest distance if we are hiding
     77 	if ( hide ) {
     78 		distance = distance / Math.pow( 2, times - 1 );
     79 	}
     80 
     81 	downAnim = {};
     82 	downAnim[ ref ] = refValue;
     83 
     84 	// Bounces up/down/left/right then back to 0 -- times * 2 animations happen here
     85 	for ( ; i < times; i++ ) {
     86 		upAnim = {};
     87 		upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;
     88 
     89 		element
     90 			.animate( upAnim, speed, easing )
     91 			.animate( downAnim, speed, easing );
     92 
     93 		distance = hide ? distance * 2 : distance / 2;
     94 	}
     95 
     96 	// Last Bounce when Hiding
     97 	if ( hide ) {
     98 		upAnim = { opacity: 0 };
     99 		upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;
    100 
    101 		element.animate( upAnim, speed, easing );
    102 	}
    103 
    104 	element.queue( done );
    105 
    106 	$.effects.unshift( element, queuelen, anims + 1 );
    107 } );
    108 
    109 } ) );