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/* jshint onevar:false, smarttabs:true */
( function( $ ) {
function TiledGalleryCollection() {
this.galleries = [];
this.findAndSetupNewGalleries();
}
TiledGalleryCollection.prototype.findAndSetupNewGalleries = function() {
var self = this;
$( '.tiled-gallery.tiled-gallery-unresized' ).each( function() {
self.galleries.push( new TiledGallery( $( this ) ) );
} );
};
TiledGalleryCollection.prototype.resizeAll = function() {
$.each( this.galleries, function( i, gallery ) {
gallery.resize();
} );
};
function TiledGallery( galleryElem ) {
this.gallery = galleryElem;
this.addCaptionEvents();
// Resize when initialized to fit the gallery to window dimensions
this.resize();
// Displays the gallery and prevents it from being initialized again
this.gallery.removeClass( 'tiled-gallery-unresized' );
}
/**
* Selector for all resizeable elements inside a Tiled Gallery
*/
TiledGallery.prototype.resizeableElementsSelector =
'.gallery-row, .gallery-group, .tiled-gallery-item img';
/**
* Story
*/
TiledGallery.prototype.addCaptionEvents = function() {
// Hide captions
this.gallery.find( '.tiled-gallery-caption' ).hide();
// Add hover effects to bring the caption up and down for each item
this.gallery.find( '.tiled-gallery-item' ).hover(
function() {
$( this )
.find( '.tiled-gallery-caption' )
.stop( true, true )
.slideDown( 'fast' );
},
function() {
$( this )
.find( '.tiled-gallery-caption' )
.stop( true, true )
.slideUp( 'fast' );
}
);
};
TiledGallery.prototype.getExtraDimension = function( el, attribute, mode ) {
if ( mode === 'horizontal' ) {
var left = attribute === 'border' ? 'borderLeftWidth' : attribute + 'Left';
var right = attribute === 'border' ? 'borderRightWidth' : attribute + 'Right';
return ( parseInt( el.css( left ), 10 ) || 0 ) + ( parseInt( el.css( right ), 10 ) || 0 );
} else if ( mode === 'vertical' ) {
var top = attribute === 'border' ? 'borderTopWidth' : attribute + 'Top';
var bottom = attribute === 'border' ? 'borderBottomWidth' : attribute + 'Bottom';
return ( parseInt( el.css( top ), 10 ) || 0 ) + ( parseInt( el.css( bottom ), 10 ) || 0 );
} else {
return 0;
}
};
TiledGallery.prototype.resize = function() {
// Resize everything in the gallery based on the ratio of the current content width
// to the original content width;
var originalWidth = this.gallery.data( 'original-width' );
var currentWidth = this.gallery.parent().width();
var resizeRatio = Math.min( 1, currentWidth / originalWidth );
var self = this;
this.gallery.find( this.resizeableElementsSelector ).each( function() {
var thisGalleryElement = $( this );
var marginWidth = self.getExtraDimension( thisGalleryElement, 'margin', 'horizontal' );
var marginHeight = self.getExtraDimension( thisGalleryElement, 'margin', 'vertical' );
var paddingWidth = self.getExtraDimension( thisGalleryElement, 'padding', 'horizontal' );
var paddingHeight = self.getExtraDimension( thisGalleryElement, 'padding', 'vertical' );
var borderWidth = self.getExtraDimension( thisGalleryElement, 'border', 'horizontal' );
var borderHeight = self.getExtraDimension( thisGalleryElement, 'border', 'vertical' );
// Take all outer dimensions into account when resizing so that images
// scale with constant empty space between them
var outerWidth =
thisGalleryElement.data( 'original-width' ) + paddingWidth + borderWidth + marginWidth;
var outerHeight =
thisGalleryElement.data( 'original-height' ) + paddingHeight + borderHeight + marginHeight;
// Subtract margins so that images don't overflow on small browser windows
thisGalleryElement
.width( Math.floor( resizeRatio * outerWidth ) - marginWidth )
.height( Math.floor( resizeRatio * outerHeight ) - marginHeight );
} );
};
/**
* Resizing logic
*/
var requestAnimationFrame =
window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.msRequestAnimationFrame;
function attachResizeInAnimationFrames( tiledGalleries ) {
var resizing = false;
var resizeTimeout = null;
function handleFrame() {
tiledGalleries.resizeAll();
if ( resizing ) {
requestAnimationFrame( handleFrame );
}
}
$( window ).resize( function() {
clearTimeout( resizeTimeout );
if ( ! resizing ) {
requestAnimationFrame( handleFrame );
}
resizing = true;
resizeTimeout = setTimeout( function() {
resizing = false;
}, 15 );
} );
}
function attachPlainResize( tiledGalleries ) {
$( window ).resize( function() {
tiledGalleries.resizeAll();
} );
}
/**
* Ready, set...
*/
$( document ).ready( function() {
var tiledGalleries = new TiledGalleryCollection();
$( 'body' ).on( 'post-load', function( e, maybeResize ) {
if ( 'string' === typeof maybeResize && 'resize' === maybeResize ) {
tiledGalleries.resizeAll();
} else {
tiledGalleries.findAndSetupNewGalleries();
}
} );
$( document ).on( 'page-rendered.wpcom-newdash', function() {
tiledGalleries.findAndSetupNewGalleries();
} );
// Chrome is a unique snow flake and will start lagging on occasion
// It helps if we only resize on animation frames
//
// For other browsers it seems like there is no lag even if we resize every
// time there is an event
if ( window.chrome && requestAnimationFrame ) {
attachResizeInAnimationFrames( tiledGalleries );
} else {
attachPlainResize( tiledGalleries );
}
if ( 'undefined' !== typeof wp && wp.customize && wp.customize.selectiveRefresh ) {
wp.customize.selectiveRefresh.bind( 'partial-content-rendered', function( placement ) {
if ( wp.isJetpackWidgetPlaced( placement, 'gallery' ) ) {
tiledGalleries.findAndSetupNewGalleries();
}
} );
}
} );
} )( jQuery );
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GitWeb