Difference between revisions of "Team:SZU China/Introductions"
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<html> | <html> | ||
<head> | <head> | ||
| − | < | + | <link href="https://2015.igem.org/Template:SZU_China/Playground/Introduction/CSS?action=raw&ctype=text/css" rel="stylesheet"> |
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</head> | </head> | ||
</html> | </html> | ||
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<script src="https://2015.igem.org/Template:SZU_China/bootstrap/Javascript?action=raw&ctype=text/javascript"></script> | <script src="https://2015.igem.org/Template:SZU_China/bootstrap/Javascript?action=raw&ctype=text/javascript"></script> | ||
| + | <script> | ||
| + | ;( function( window ) { | ||
| + | |||
| + | 'use strict'; | ||
| + | |||
| + | var docElem = window.document.documentElement, | ||
| + | transEndEventNames = { | ||
| + | 'WebkitTransition': 'webkitTransitionEnd', | ||
| + | 'MozTransition': 'transitionend', | ||
| + | 'OTransition': 'oTransitionEnd', | ||
| + | 'msTransition': 'MSTransitionEnd', | ||
| + | 'transition': 'transitionend' | ||
| + | }, | ||
| + | transEndEventName = transEndEventNames[ Modernizr.prefixed( 'transition' ) ], | ||
| + | support = { | ||
| + | transitions : Modernizr.csstransitions, | ||
| + | support3d : Modernizr.csstransforms3d | ||
| + | }; | ||
| + | |||
| + | function setTransform( el, transformStr ) { | ||
| + | el.style.WebkitTransform = transformStr; | ||
| + | el.style.msTransform = transformStr; | ||
| + | el.style.transform = transformStr; | ||
| + | } | ||
| + | |||
| + | // from http://responsejs.com/labs/dimensions/ | ||
| + | function getViewportW() { | ||
| + | var client = docElem['clientWidth'], | ||
| + | inner = window['innerWidth']; | ||
| + | |||
| + | if( client < inner ) | ||
| + | return inner; | ||
| + | else | ||
| + | return client; | ||
| + | } | ||
| + | |||
| + | function extend( a, b ) { | ||
| + | for( var key in b ) { | ||
| + | if( b.hasOwnProperty( key ) ) { | ||
| + | a[key] = b[key]; | ||
| + | } | ||
| + | } | ||
| + | return a; | ||
| + | } | ||
| + | |||
| + | function CBPGridGallery( el, options ) { | ||
| + | this.el = el; | ||
| + | this.options = extend( {}, this.options ); | ||
| + | extend( this.options, options ); | ||
| + | this._init(); | ||
| + | } | ||
| + | |||
| + | CBPGridGallery.prototype.options = { | ||
| + | }; | ||
| + | |||
| + | CBPGridGallery.prototype._init = function() { | ||
| + | // main grid | ||
| + | this.grid = this.el.querySelector( 'section.grid-wrap > ul.grid' ); | ||
| + | // main grid items | ||
| + | this.gridItems = [].slice.call( this.grid.querySelectorAll( 'li:not(.grid-sizer)' ) ); | ||
| + | // items total | ||
| + | this.itemsCount = this.gridItems.length; | ||
| + | // slideshow grid | ||
| + | this.slideshow = this.el.querySelector( 'section.slideshow > ul' ); | ||
| + | // slideshow grid items | ||
| + | this.slideshowItems = [].slice.call( this.slideshow.children ); | ||
| + | // index of current slideshow item | ||
| + | this.current = -1; | ||
| + | // slideshow control buttons | ||
| + | this.ctrlPrev = this.el.querySelector( 'section.slideshow > nav > span.nav-prev' ); | ||
| + | this.ctrlNext = this.el.querySelector( 'section.slideshow > nav > span.nav-next' ); | ||
| + | this.ctrlClose = this.el.querySelector( 'section.slideshow > nav > span.nav-close' ); | ||
| + | // init masonry grid | ||
| + | this._initMasonry(); | ||
| + | // init events | ||
| + | this._initEvents(); | ||
| + | }; | ||
| + | |||
| + | CBPGridGallery.prototype._initMasonry = function() { | ||
| + | var grid = this.grid; | ||
| + | imagesLoaded( grid, function() { | ||
| + | new Masonry( grid, { | ||
| + | itemSelector: 'li', | ||
| + | columnWidth: grid.querySelector( '.grid-sizer' ) | ||
| + | }); | ||
| + | }); | ||
| + | }; | ||
| + | |||
| + | CBPGridGallery.prototype._initEvents = function() { | ||
| + | var self = this; | ||
| + | |||
| + | // open the slideshow when clicking on the main grid items | ||
| + | this.gridItems.forEach( function( item, idx ) { | ||
| + | item.addEventListener( 'click', function() { | ||
| + | self._openSlideshow( idx ); | ||
| + | } ); | ||
| + | } ); | ||
| + | |||
| + | // slideshow controls | ||
| + | this.ctrlPrev.addEventListener( 'click', function() { self._navigate( 'prev' ); } ); | ||
| + | this.ctrlNext.addEventListener( 'click', function() { self._navigate( 'next' ); } ); | ||
| + | this.ctrlClose.addEventListener( 'click', function() { self._closeSlideshow(); } ); | ||
| + | |||
| + | // window resize | ||
| + | window.addEventListener( 'resize', function() { self._resizeHandler(); } ); | ||
| + | |||
| + | // keyboard navigation events | ||
| + | document.addEventListener( 'keydown', function( ev ) { | ||
| + | if ( self.isSlideshowVisible ) { | ||
| + | var keyCode = ev.keyCode || ev.which; | ||
| + | |||
| + | switch (keyCode) { | ||
| + | case 37: | ||
| + | self._navigate( 'prev' ); | ||
| + | break; | ||
| + | case 39: | ||
| + | self._navigate( 'next' ); | ||
| + | break; | ||
| + | case 27: | ||
| + | self._closeSlideshow(); | ||
| + | break; | ||
| + | } | ||
| + | } | ||
| + | } ); | ||
| + | |||
| + | // trick to prevent scrolling when slideshow is visible | ||
| + | window.addEventListener( 'scroll', function() { | ||
| + | if ( self.isSlideshowVisible ) { | ||
| + | window.scrollTo( self.scrollPosition ? self.scrollPosition.x : 0, self.scrollPosition ? self.scrollPosition.y : 0 ); | ||
| + | } | ||
| + | else { | ||
| + | self.scrollPosition = { x : window.pageXOffset || docElem.scrollLeft, y : window.pageYOffset || docElem.scrollTop }; | ||
| + | } | ||
| + | }); | ||
| + | }; | ||
| + | |||
| + | CBPGridGallery.prototype._openSlideshow = function( pos ) { | ||
| + | this.isSlideshowVisible = true; | ||
| + | this.current = pos; | ||
| + | |||
| + | classie.addClass( this.el, 'slideshow-open' ); | ||
| + | |||
| + | /* position slideshow items */ | ||
| + | |||
| + | // set viewport items (current, next and previous) | ||
| + | this._setViewportItems(); | ||
| + | |||
| + | // add class "current" and "show" to currentItem | ||
| + | classie.addClass( this.currentItem, 'current' ); | ||
| + | classie.addClass( this.currentItem, 'show' ); | ||
| + | |||
| + | // add class show to next and previous items | ||
| + | // position previous item on the left side and the next item on the right side | ||
| + | if( this.prevItem ) { | ||
| + | classie.addClass( this.prevItem, 'show' ); | ||
| + | var translateVal = Number( -1 * ( getViewportW() / 2 + this.prevItem.offsetWidth / 2 ) ); | ||
| + | setTransform( this.prevItem, support.support3d ? 'translate3d(' + translateVal + 'px, 0, -150px)' : 'translate(' + translateVal + 'px)' ); | ||
| + | } | ||
| + | if( this.nextItem ) { | ||
| + | classie.addClass( this.nextItem, 'show' ); | ||
| + | var translateVal = Number( getViewportW() / 2 + this.nextItem.offsetWidth / 2 ); | ||
| + | setTransform( this.nextItem, support.support3d ? 'translate3d(' + translateVal + 'px, 0, -150px)' : 'translate(' + translateVal + 'px)' ); | ||
| + | } | ||
| + | }; | ||
| + | |||
| + | CBPGridGallery.prototype._navigate = function( dir ) { | ||
| + | if( this.isAnimating ) return; | ||
| + | if( dir === 'next' && this.current === this.itemsCount - 1 || dir === 'prev' && this.current === 0 ) { | ||
| + | this._closeSlideshow(); | ||
| + | return; | ||
| + | } | ||
| + | |||
| + | this.isAnimating = true; | ||
| + | |||
| + | // reset viewport items | ||
| + | this._setViewportItems(); | ||
| + | |||
| + | var self = this, | ||
| + | itemWidth = this.currentItem.offsetWidth, | ||
| + | // positions for the centered/current item, both the side items and the incoming ones | ||
| + | transformLeftStr = support.support3d ? 'translate3d(-' + Number( getViewportW() / 2 + itemWidth / 2 ) + 'px, 0, -150px)' : 'translate(-' + Number( getViewportW() / 2 + itemWidth / 2 ) + 'px)', | ||
| + | transformRightStr = support.support3d ? 'translate3d(' + Number( getViewportW() / 2 + itemWidth / 2 ) + 'px, 0, -150px)' : 'translate(' + Number( getViewportW() / 2 + itemWidth / 2 ) + 'px)', | ||
| + | transformCenterStr = '', transformOutStr, transformIncomingStr, | ||
| + | // incoming item | ||
| + | incomingItem; | ||
| + | |||
| + | if( dir === 'next' ) { | ||
| + | transformOutStr = support.support3d ? 'translate3d( -' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px, 0, -150px )' : 'translate(-' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px)'; | ||
| + | transformIncomingStr = support.support3d ? 'translate3d( ' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px, 0, -150px )' : 'translate(' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px)'; | ||
| + | } | ||
| + | else { | ||
| + | transformOutStr = support.support3d ? 'translate3d( ' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px, 0, -150px )' : 'translate(' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px)'; | ||
| + | transformIncomingStr = support.support3d ? 'translate3d( -' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px, 0, -150px )' : 'translate(-' + Number( (getViewportW() * 2) / 2 + itemWidth / 2 ) + 'px)'; | ||
| + | } | ||
| + | |||
| + | // remove class animatable from the slideshow grid (if it has already) | ||
| + | classie.removeClass( self.slideshow, 'animatable' ); | ||
| + | |||
| + | if( dir === 'next' && this.current < this.itemsCount - 2 || dir === 'prev' && this.current > 1 ) { | ||
| + | // we have an incoming item! | ||
| + | incomingItem = this.slideshowItems[ dir === 'next' ? this.current + 2 : this.current - 2 ]; | ||
| + | setTransform( incomingItem, transformIncomingStr ); | ||
| + | classie.addClass( incomingItem, 'show' ); | ||
| + | } | ||
| + | |||
| + | var slide = function() { | ||
| + | // add class animatable to the slideshow grid | ||
| + | classie.addClass( self.slideshow, 'animatable' ); | ||
| + | |||
| + | // overlays: | ||
| + | classie.removeClass( self.currentItem, 'current' ); | ||
| + | var nextCurrent = dir === 'next' ? self.nextItem : self.prevItem; | ||
| + | classie.addClass( nextCurrent, 'current' ); | ||
| + | |||
| + | setTransform( self.currentItem, dir === 'next' ? transformLeftStr : transformRightStr ); | ||
| + | |||
| + | if( self.nextItem ) { | ||
| + | setTransform( self.nextItem, dir === 'next' ? transformCenterStr : transformOutStr ); | ||
| + | } | ||
| + | |||
| + | if( self.prevItem ) { | ||
| + | setTransform( self.prevItem, dir === 'next' ? transformOutStr : transformCenterStr ); | ||
| + | } | ||
| + | |||
| + | if( incomingItem ) { | ||
| + | setTransform( incomingItem, dir === 'next' ? transformRightStr : transformLeftStr ); | ||
| + | } | ||
| + | |||
| + | var onEndTransitionFn = function( ev ) { | ||
| + | if( support.transitions ) { | ||
| + | if( ev.propertyName.indexOf( 'transform' ) === -1 ) return false; | ||
| + | this.removeEventListener( transEndEventName, onEndTransitionFn ); | ||
| + | } | ||
| + | |||
| + | if( self.prevItem && dir === 'next' ) { | ||
| + | classie.removeClass( self.prevItem, 'show' ); | ||
| + | } | ||
| + | else if( self.nextItem && dir === 'prev' ) { | ||
| + | classie.removeClass( self.nextItem, 'show' ); | ||
| + | } | ||
| + | |||
| + | if( dir === 'next' ) { | ||
| + | self.prevItem = self.currentItem; | ||
| + | self.currentItem = self.nextItem; | ||
| + | if( incomingItem ) { | ||
| + | self.nextItem = incomingItem; | ||
| + | } | ||
| + | } | ||
| + | else { | ||
| + | self.nextItem = self.currentItem; | ||
| + | self.currentItem = self.prevItem; | ||
| + | if( incomingItem ) { | ||
| + | self.prevItem = incomingItem; | ||
| + | } | ||
| + | } | ||
| + | |||
| + | self.current = dir === 'next' ? self.current + 1 : self.current - 1; | ||
| + | self.isAnimating = false; | ||
| + | }; | ||
| + | |||
| + | if( support.transitions ) { | ||
| + | self.currentItem.addEventListener( transEndEventName, onEndTransitionFn ); | ||
| + | } | ||
| + | else { | ||
| + | onEndTransitionFn(); | ||
| + | } | ||
| + | }; | ||
| + | |||
| + | setTimeout( slide, 25 ); | ||
| + | } | ||
| + | |||
| + | CBPGridGallery.prototype._closeSlideshow = function( pos ) { | ||
| + | // remove class slideshow-open from the grid gallery elem | ||
| + | classie.removeClass( this.el, 'slideshow-open' ); | ||
| + | // remove class animatable from the slideshow grid | ||
| + | classie.removeClass( this.slideshow, 'animatable' ); | ||
| + | |||
| + | var self = this, | ||
| + | onEndTransitionFn = function( ev ) { | ||
| + | if( support.transitions ) { | ||
| + | if( ev.target.tagName.toLowerCase() !== 'ul' ) return; | ||
| + | this.removeEventListener( transEndEventName, onEndTransitionFn ); | ||
| + | } | ||
| + | // remove classes show and current from the slideshow items | ||
| + | classie.removeClass( self.currentItem, 'current' ); | ||
| + | classie.removeClass( self.currentItem, 'show' ); | ||
| + | |||
| + | if( self.prevItem ) { | ||
| + | classie.removeClass( self.prevItem, 'show' ); | ||
| + | } | ||
| + | if( self.nextItem ) { | ||
| + | classie.removeClass( self.nextItem, 'show' ); | ||
| + | } | ||
| + | |||
| + | // also reset any transforms for all the items | ||
| + | self.slideshowItems.forEach( function( item ) { setTransform( item, '' ); } ); | ||
| + | |||
| + | self.isSlideshowVisible = false; | ||
| + | }; | ||
| + | |||
| + | if( support.transitions ) { | ||
| + | this.el.addEventListener( transEndEventName, onEndTransitionFn ); | ||
| + | } | ||
| + | else { | ||
| + | onEndTransitionFn(); | ||
| + | } | ||
| + | }; | ||
| + | |||
| + | CBPGridGallery.prototype._setViewportItems = function() { | ||
| + | this.currentItem = null; | ||
| + | this.prevItem = null; | ||
| + | this.nextItem = null; | ||
| + | |||
| + | if( this.current > 0 ) { | ||
| + | this.prevItem = this.slideshowItems[ this.current - 1 ]; | ||
| + | } | ||
| + | if( this.current < this.itemsCount - 1 ) { | ||
| + | this.nextItem = this.slideshowItems[ this.current + 1 ]; | ||
| + | } | ||
| + | this.currentItem = this.slideshowItems[ this.current ]; | ||
| + | } | ||
| + | |||
| + | // taken from https://github.com/desandro/vanilla-masonry/blob/master/masonry.js by David DeSandro | ||
| + | // original debounce by John Hann | ||
| + | // http://unscriptable.com/index.php/2009/03/20/debouncing-javascript-methods/ | ||
| + | CBPGridGallery.prototype._resizeHandler = function() { | ||
| + | var self = this; | ||
| + | function delayed() { | ||
| + | self._resize(); | ||
| + | self._resizeTimeout = null; | ||
| + | } | ||
| + | if ( this._resizeTimeout ) { | ||
| + | clearTimeout( this._resizeTimeout ); | ||
| + | } | ||
| + | this._resizeTimeout = setTimeout( delayed, 50 ); | ||
| + | } | ||
| + | |||
| + | CBPGridGallery.prototype._resize = function() { | ||
| + | if ( this.isSlideshowVisible ) { | ||
| + | // update width value | ||
| + | if( this.prevItem ) { | ||
| + | var translateVal = Number( -1 * ( getViewportW() / 2 + this.prevItem.offsetWidth / 2 ) ); | ||
| + | setTransform( this.prevItem, support.support3d ? 'translate3d(' + translateVal + 'px, 0, -150px)' : 'translate(' + translateVal + 'px)' ); | ||
| + | } | ||
| + | if( this.nextItem ) { | ||
| + | var translateVal = Number( getViewportW() / 2 + this.nextItem.offsetWidth / 2 ); | ||
| + | setTransform( this.nextItem, support.support3d ? 'translate3d(' + translateVal + 'px, 0, -150px)' : 'translate(' + translateVal + 'px)' ); | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | |||
| + | // add to global namespace | ||
| + | window.CBPGridGallery = CBPGridGallery; | ||
| + | |||
| + | })( window ); | ||
| + | </script> | ||
</body> | </body> | ||
</html> | </html> | ||
Revision as of 15:45, 16 September 2015
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