MediaWiki:Gadget-VideoResizer.js

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/* Automatically resize videos to fit the page width */

function autoResizer() {
	$('#mw-content-text .autoResize').each(function() {
		var body = $('#mw-content-text .mw-parser-output');
		var iframe = $(this).find('iframe');
		if (typeof iframe.attr('data-orig-width') == 'undefined') {
			iframe.attr('data-orig-width', iframe.width());
			iframe.attr('data-orig-height', iframe.height());
		}
		var newWidth = $(this).parent().parent().is('section') ? body.width() : body.width() - 10;
		if (newWidth < iframe.attr('data-orig-width')) {
			var aspect = iframe.attr('data-orig-width') / iframe.attr('data-orig-height');
			var newWidth = Math.ceil(newWidth);
			var newHeight = Math.floor(newWidth / aspect);
			$(this).css('width', newWidth);
			iframe.attr('width', newWidth);
			iframe.attr('height', newHeight);
		} else if (iframe.width() != iframe.attr('data-orig-width')) {
			$(this).css('width', iframe.attr('data-orig-width'));
			iframe.attr('width', iframe.attr('data-orig-width'));
			iframe.attr('height', iframe.attr('data-orig-height'));
		}
	});
}
$(autoResizer);
$(window).resize(function() {
	clearTimeout(window.resizeFinished);
	window.resizeFinished = setTimeout(function() {
		$(autoResizer);
	}, 100);
});