mirror of
https://github.com/openseadragon/openseadragon.git
synced 2024-11-22 21:26:10 +03:00
112 lines
3.0 KiB
JavaScript
112 lines
3.0 KiB
JavaScript
(function( $ ){
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/**
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* @class
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* @extends OpenSeadragon.TileSource
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*/
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$.TileSourceCollection = function( tileSize, tileSources, rows, layout ) {
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if( $.isPlainObject( tileSize ) ){
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options = tileSize;
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}else{
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options = {
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tileSize: arguments[ 0 ],
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tileSources: arguments[ 1 ],
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rows: arguments[ 2 ],
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layout: arguments[ 3 ]
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};
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}
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if( !options.layout ){
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options.layout = 'horizontal';
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}
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var minLevel = 0,
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levelSize = 1.0,
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tilesPerRow = Math.ceil( options.tileSources.length / options.rows ),
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longSide = tilesPerRow >= options.rows ?
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tilesPerRow :
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options.rows;
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if( 'horizontal' == options.layout ){
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options.width = ( options.tileSize ) * tilesPerRow;
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options.height = ( options.tileSize ) * options.rows;
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} else {
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options.height = ( options.tileSize ) * tilesPerRow;
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options.width = ( options.tileSize ) * options.rows;
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}
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options.tileOverlap = -options.tileMargin;
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options.tilesPerRow = tilesPerRow;
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//Set min level to avoid loading sublevels since collection is a
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//different kind of abstraction
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while( levelSize < ( options.tileSize ) * longSide ){
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//$.console.log( '%s levelSize %s minLevel %s', options.tileSize * longSide, levelSize, minLevel );
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levelSize = levelSize * 2.0;
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minLevel++;
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}
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options.minLevel = minLevel;
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//for( var name in options ){
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// $.console.log( 'Collection %s %s', name, options[ name ] );
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//}
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$.TileSource.apply( this, [ options ] );
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};
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$.extend( $.TileSourceCollection.prototype, $.TileSource.prototype, {
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/**
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* @function
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* @name OpenSeadragon.TileSourceCollection.prototype.getTileBounds
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* @param {Number} level
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* @param {Number} x
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* @param {Number} y
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*/
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getTileBounds: function( level, x, y ) {
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var dimensionsScaled = this.dimensions.times( this.getLevelScale( level ) ),
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px = this.tileSize * x - this.tileOverlap,
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py = this.tileSize * y - this.tileOverlap,
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sx = this.tileSize + 1 * this.tileOverlap,
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sy = this.tileSize + 1 * this.tileOverlap,
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scale = 1.0 / dimensionsScaled.x;
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sx = Math.min( sx, dimensionsScaled.x - px );
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sy = Math.min( sy, dimensionsScaled.y - py );
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return new $.Rect( px * scale, py * scale, sx * scale, sy * scale );
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},
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/**
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*
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* @function
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* @name OpenSeadragon.TileSourceCollection.prototype.configure
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*/
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configure: function( data, url ){
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return;
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},
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/**
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* @function
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* @name OpenSeadragon.TileSourceCollection.prototype.getTileUrl
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* @param {Number} level
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* @param {Number} x
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* @param {Number} y
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*/
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getTileUrl: function( level, x, y ) {
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//$.console.log([ level, '/', x, '_', y ].join( '' ));
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return null;
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}
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});
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}( OpenSeadragon ));
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