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-/**
- * Flowr.js - Simple jQuery plugin to emulate Flickr's justified view
- * For usage information refer to http://github.com/kalyan02/flowr-js
- *
- *
- * @author: Kalyan Chakravarthy (http://KalyanChakravarthy.net)
- * @version: v0.1
- */
-(function($){
- //$("#container2").css( 'border', '1px solid #ccc');
- $.fn.flowr = function(options) {
-
- $this = this;
- var ROW_CLASS_NAME = 'flowr-row'; // Class name for the row of flowy
- var MAX_LAST_ROW_GAP = 25; // If the width of last row is lesser than max-width, recalculation is needed
- var NO_COPY_FIELDS = [ 'complete', 'data', 'responsive' ]; // these attributes will not be carried forward for append related calls
- var DEFAULTS = {
- 'data' : [],
- 'padding' : 5, // whats the padding between flowy items
- 'height' : 240, // Minimum height an image row should take
- 'render' : null, // callback function to get the tag
- 'append' : false, // TODO
- 'widthAttr' : 'width', // a custom data structure can specify which attribute refers to height/width
- 'heightAttr' : 'height',
- 'maxScale' : 1.5, // In case there is only 1 elment in last row
- 'maxWidth' : this.width()-1, // 1px is just for offset
- 'itemWidth' : null, // callback function for width
- 'itemHeight' : null, // callback function for height
- 'complete' : null, // complete callback
- 'rowClassName' : ROW_CLASS_NAME,
- 'rows' : -1, // Maximum number of rows to render. -1 for no limit.
- 'responsive' : true // make content responsive
- };
- var settings = $.extend( DEFAULTS, options);
-
- // If data is being appended, we already have settings
- // If we already have settings, retrieve them
- if( settings.append && $this.data('lastSettings') ) {
- lastSettings = $this.data('lastSettings');
-
- // Copy over the settings from previous init
- for( attr in DEFAULTS ) {
- if( NO_COPY_FIELDS.indexOf(attr)<0 && settings[attr] == DEFAULTS[attr] ) {
- settings[attr] = lastSettings[attr];
- }
- }
-
- // Check if we have an incomplete last row
- lastRow = $this.data('lastRow');
- if( lastRow.data.length > 0 && settings.maxWidth-lastRow.width > MAX_LAST_ROW_GAP ) {
- // Prepend the incomplete row to newly loaded data and redraw
- lastRowData = lastSettings.data.slice( lastSettings.data.length - lastRow.data.length - 1 );
- settings.data = lastRowData.concat(settings.data);
-
- // Remove the incomplete row
- // TODO: Don't reload this stuff later. Reattach to new row.
- $( '.' + settings.rowClassName + ':last', $this ).detach();
- } else {
- // console.log( lastRow.data.length );
- // console.log( lastRow.width );
- }
- }
-
- // only on the first initial call
- if( !settings.responsive && !settings.append )
- $this.width( $this.width() );
-
- // Basic sanity checks
- if( !(settings.data instanceof Array) )
- return;
-
- if( typeof(settings.padding) != 'number' )
- settings.padding = parseInt( settings.padding );
-
- if( typeof(settings.itemWidth) != 'function' ) {
- settings.itemWidth = function(data) {
- return data[ settings.widthAttr ];
- }
- }
-
- if( typeof(settings.itemHeight) != 'function' ) {
- settings.itemHeight = function(data) {
- return data[ settings.heightAttr ];
- }
- }
-
- // A standalone utility to calculate the item widths for a particular row
- // Returns rowWidth: width occupied & data : the items in the new row
- var utils = {
- getNextRow : function( data, settings ) {
- var itemIndex = 0;
- var itemsLength = data.length;
- var lineItems = [];
- var lineWidth = 0;
- var maxWidth = settings.maxWidth;
- var paddingSize = settings.padding;
-
- // console.log( 'maxItems=' + data.length );
-
- requiredPadding = function() {
- var extraPads = arguments.length == 1 ? arguments[0] : 0;
- return (lineItems.length - 1 + extraPads) * settings.padding;
- }
-
- while( lineWidth + requiredPadding() < settings.maxWidth && (itemIndex < itemsLength) ) {
- var itemData = data[ itemIndex ];
- var itemWidth = settings.itemWidth.call( $this, itemData );
- var itemHeight = settings.itemHeight.call( $this, itemData );
-
- var minHeight = settings.height;
- var minWidth = Math.floor( itemWidth * settings.height / itemHeight );
-
- var newLineWidth = lineWidth + minWidth + requiredPadding(1);
-
- if (minWidth > settings.maxWidth) {
- // very short+wide images like panoramas
- // show them even if ugly, as wide as possible
- minWidth = settings.maxWidth-1;
- minHeight = settings.height * minHeight / minWidth;
- }
-
- // console.log( 'lineWidth = ' + lineWidth );
- // console.log( 'newLineWidth = ' + newLineWidth );
- if( newLineWidth < settings.maxWidth ) {
- lineItems.push({
- 'height' : minHeight,
- 'width' : minWidth,
- 'itemData' : itemData
- });
-
- lineWidth += minWidth;
- itemIndex ++;
- } else {
- // We'd have exceeded width. So break off to scale.
- // console.log( 'breaking off = ' + itemIndex );
- // console.log( 'leave off size = ' + lineItems.length );
- break;
- }
- } //while
-
- // Scale the size to max width
- testWidth=0;
- if( lineWidth < settings.maxWidth ) {
- var fullScaleWidth = settings.maxWidth - requiredPadding() - 10;
- var currScaleWidth = lineWidth;
- var scaleFactor = fullScaleWidth / currScaleWidth;
- if( scaleFactor > settings.maxScale )
- scaleFactor = 1;
-
- var newHeight = Math.round( settings.height * scaleFactor );
- for( i=0; i<lineItems.length; i++ ) {
- var lineItem = lineItems[ i ];
- lineItem.width = Math.floor(lineItem.width * scaleFactor);
- lineItem.height = newHeight;
-
- testWidth += lineItem.width;
- }
- }
-
- return {
- data : lineItems,
- width : testWidth + requiredPadding()
- };
- }, //getNextRow
- reorderContent : function(){
- /*
- TODO: optimize for faster resizing by reusing dom objects instead of killing the dom
- */
- var _initialWidth = $this.data('width');
- var _newWidth = $this.width();
- var _change = _initialWidth - _newWidth;
-
- if(_initialWidth!=_newWidth) {
- $this.html('');
- var _settings = $this.data( 'lastSettings' );
- _settings.data = $this.data( 'data' );
- _settings.maxWidth = $this.width() - 1;
- $this.flowr( _settings );
- }
- }
- } //utils
-
- // If the resposive var is set to true then listen for resize method
- // and prevent resizing from happening twice if responsive is set again during append phase!
- if( settings.responsive && !$this.data('__responsive') ) {
- $(window).resize(function(){
- initialWidth = $this.data('width');
- newWidth = $this.width();
-
- //initiate resize
- if( initialWidth != newWidth ) {
- var task_id = $this.data('task_id');
- if( task_id ) {
- task_id = clearTimeout( task_id );
- task_id = null;
- }
- task_id = setTimeout( utils.reorderContent, 80 );
- $this.data('task_id', task_id );
- }
- });
- $this.data('__responsive',true);
- }
-
-
- return this.each(function(){
-
- // Get a copy of original data. 1 level deep copy is sufficient.
- var data = settings.data.slice(0);
- var rowData = null;
- var currentRow = 0;
- var currentItem = 0;
-
- // Store all the data
- var allData = $this.data( 'data' ) || [];
- for(i=0;i<data.length;i++) {
- allData.push( data[i] );
- }
- $this.data( 'data', allData );
-
- // While we have a new row
- while( ( rowData = utils.getNextRow(data,settings) ) != null && rowData.data.length > 0 ) {
- if( settings.rows > 0 && currentRow >= settings.rows )
- break;
- // remove the number of elements in the new row from the top of data stack
- data.splice( 0, rowData.data.length );
-
- // Create a new row div, add class, append the htmls and insert the flowy items
- var $row = $('<div>').addClass(settings.rowClassName);
- for( i=0; i<rowData.data.length; i++ ) {
- var displayData = rowData.data[i];
- // Get the HTML object from custom render function passed as argument
- var displayObject = settings.render.call( $this, displayData );
- displayObject = $(displayObject);
- // Set some basic stuff
- displayObject
- .css( 'width', displayData.width )
- .css( 'height', displayData.height )
- .css( 'margin-left', i==0 ? '0' : settings.padding + "px" ); //TODO:Refactor
- $row.append( displayObject );
-
- currentItem++;
- }
- $this.append( $row );
- // console.log ( "I> rowData.data.length="+rowData.data.length +" rowData.width="+rowData.width );
-
- currentRow++;
- $this.data('lastRow', rowData );
- }
- // store the current state of settings and the items in last row
- // we'll need this info when we append more items
- $this.data('lastSettings', settings );
-
- // onComplete callback
- // pass back info about list of rows and items rendered
- if( typeof (settings.complete) == 'function' ) {
- var completeData = {
- renderedRows : currentRow,
- renderedItems : currentItem
- }
- settings.complete.call( $this, completeData );
- }
- });
- };
-
-})(jQuery);
generated by cgit v1.2.3 (git 2.46.0) at 2026-01-26 19:50:54 +0000