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										 |  |  | <html> | 
					
						
							|  |  |  | <style> | 
					
						
							|  |  |  | 
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							|  |  |  | button, | 
					
						
							|  |  |  | details { | 
					
						
							|  |  |  | 	border: solid 1px gray; | 
					
						
							|  |  |  | 	border-radius: 4px; | 
					
						
							|  |  |  | 	margin: 1px; | 
					
						
							|  |  |  | 	background: white; | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | details { | 
					
						
							|  |  |  | 	width: 500px; | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | details > div { | 
					
						
							|  |  |  | 	margin: 10px; | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | summary { | 
					
						
							|  |  |  | 	padding-left: 3px; | 
					
						
							|  |  |  | 	background: #ddd; | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | input[type=range] { | 
					
						
							|  |  |  | 	width: 300px; | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | /* XXX this is not live... | 
					
						
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										 |  |  | input[type=range]:after { | 
					
						
							|  |  |  | 	content: attr(value); | 
					
						
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										 |  |  | 	color: black; | 
					
						
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										 |  |  | } | 
					
						
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										 |  |  | */ | 
					
						
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										 |  |  | div > span:first-child { | 
					
						
							|  |  |  | 	display: inline-block; | 
					
						
							|  |  |  | 	width: 100px; | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | /* range syling... */ | 
					
						
							|  |  |  | input[type='range'] { | 
					
						
							|  |  |  | 	-webkit-appearance: none !important; | 
					
						
							|  |  |  | 	background: silver; | 
					
						
							|  |  |  | 	height: 4px; | 
					
						
							|  |  |  | 	border: solid 1px gray; | 
					
						
							|  |  |  | 	border-radius: 2px; | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | input[type='range']::-webkit-slider-thumb { | 
					
						
							|  |  |  | 	-webkit-appearance: none !important; | 
					
						
							|  |  |  | 	background: white; | 
					
						
							|  |  |  | 	height: 15px; | 
					
						
							|  |  |  | 	width: 15px; | 
					
						
							|  |  |  | 	border: solid 1px gray; | 
					
						
							|  |  |  | 	border-radius: 50%; | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | .value { | 
					
						
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										 |  |  | 	-webkit-appearance: none !important; | 
					
						
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										 |  |  | 	display: inline-block; | 
					
						
							|  |  |  | 	width: 40px; | 
					
						
							|  |  |  | 	text-align: right; | 
					
						
							|  |  |  | 	margin-left: 5px; | 
					
						
							|  |  |  | 	margin-right: 5px; | 
					
						
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										 |  |  | 	background: white; | 
					
						
							|  |  |  | 	border: none; | 
					
						
							|  |  |  | 	border-radius: 2px; | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | input::-webkit-outer-spin-button, | 
					
						
							|  |  |  | input::-webkit-inner-spin-button { | 
					
						
							|  |  |  | 	-webkit-appearance: none !important; | 
					
						
							|  |  |  | 	/* | 
					
						
							|  |  |  | 	display: inline-block; | 
					
						
							|  |  |  | 	background: white; | 
					
						
							|  |  |  | 	border-radius: 2px; | 
					
						
							|  |  |  | 	border: solid 1px gray; | 
					
						
							|  |  |  | 	width: 10px; | 
					
						
							|  |  |  | 	*/ | 
					
						
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										 |  |  | } | 
					
						
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										 |  |  | 
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										 |  |  | </style> | 
					
						
							|  |  |  | <script src="jquery.js"></script> | 
					
						
							|  |  |  | <script> | 
					
						
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							|  |  |  | function updateFilter(e, f, v){ | 
					
						
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										 |  |  | 	e = $(e) | 
					
						
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										 |  |  | 	var state = e | 
					
						
							|  |  |  | 		.css('-webkit-filter') | 
					
						
							|  |  |  | 	state = state == 'none' ? '' : state + ' ' | 
					
						
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										 |  |  | 	//state = state.replace(RegExp(f+'\\s*\\([^\\)]*\\)'), '') | 
					
						
							|  |  |  | 	//state += f+'('+v+')' | 
					
						
							|  |  |  | 	if(RegExp(f).test(state)){ | 
					
						
							|  |  |  | 		state = state.replace(RegExp(f+'\\s*\\([^\\)]*\\)'), f+'('+v+')') | 
					
						
							|  |  |  | 	} else { | 
					
						
							|  |  |  | 		state += f+'('+v+')' | 
					
						
							|  |  |  | 	} | 
					
						
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										 |  |  | 
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							|  |  |  | 	e.css({ | 
					
						
							|  |  |  | 		'-webkit-filter': state, | 
					
						
							|  |  |  | 		'filter': state | 
					
						
							|  |  |  | 	}) | 
					
						
							|  |  |  | 	return v | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | function resetFilter(e, f){ | 
					
						
							|  |  |  | 	e = $(e) | 
					
						
							|  |  |  | 	var state = e | 
					
						
							|  |  |  | 		.css('-webkit-filter') | 
					
						
							|  |  |  | 	state = state == 'none' ? '' : state + ' ' | 
					
						
							|  |  |  | 	state = state.replace(RegExp(f+'\\s*\\([^\\)]*\\)'), '').trim() | 
					
						
							|  |  |  | 	e.css({ | 
					
						
							|  |  |  | 		'-webkit-filter': state, | 
					
						
							|  |  |  | 		'filter': state | 
					
						
							|  |  |  | 	}) | 
					
						
							|  |  |  | 	return e | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | 
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							|  |  |  | function resetPrevRange(e){ | 
					
						
							|  |  |  | 	e = $(e).prev('input[type=range]') | 
					
						
							|  |  |  | 	e.val(e.attr('default')) | 
					
						
							|  |  |  | 		.change() | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | // XXX this does not set hue correctly... | 
					
						
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										 |  |  | function loadSliderState(){ | 
					
						
							|  |  |  | 	var state = $('#image') | 
					
						
							|  |  |  | 		.css('-webkit-filter') | 
					
						
							|  |  |  | 		.split(/\s*\(\s*|\s*\)\s*/g) | 
					
						
							|  |  |  | 		.reverse() | 
					
						
							|  |  |  | 		.slice(1) | 
					
						
							|  |  |  | 	// reset sliders do defaults... | 
					
						
							|  |  |  | 	$('input[type=range]').each(function(i, e){ | 
					
						
							|  |  |  | 		e = $(e) | 
					
						
							|  |  |  | 		e.val(e.attr('default')) | 
					
						
							|  |  |  | 	}) | 
					
						
							|  |  |  | 	// set the saved values... | 
					
						
							|  |  |  | 	while(state.length > 0){ | 
					
						
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										 |  |  | 		var e = $('#'+state.pop()) | 
					
						
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										 |  |  | 		if(e.prop('normalize')){ | 
					
						
							|  |  |  | 			e.val(v2r(parseFloat(state.pop()))) | 
					
						
							|  |  |  | 		} else { | 
					
						
							|  |  |  | 			e.val(parseFloat(state.pop())) | 
					
						
							|  |  |  | 		} | 
					
						
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										 |  |  | 	} | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | function saveState(){ | 
					
						
							|  |  |  | 	var l = $('.state').length | 
					
						
							|  |  |  | 	var state = $('#image').css('-webkit-filter') | 
					
						
							|  |  |  | 	$('<button></button>') | 
					
						
							|  |  |  | 		.text(l) | 
					
						
							|  |  |  | 		.addClass('state '+l) | 
					
						
							|  |  |  | 		.attr('state', state) | 
					
						
							|  |  |  | 		.click(function(){ | 
					
						
							|  |  |  | 			$('#image').css('-webkit-filter', state) | 
					
						
							|  |  |  | 			loadSliderState() | 
					
						
							|  |  |  | 		}) | 
					
						
							|  |  |  | 		.appendTo($('.states')) | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | function clearStates(){ | 
					
						
							|  |  |  | 	$('.state').remove() | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | function makeAbsRange(text, filter, target, min, max, dfl, step, tran, normalize){ | 
					
						
							|  |  |  | 	tran = tran == null ? function(v){return v} : tran | 
					
						
							|  |  |  | 	normalize = normalize == null ? false : true | 
					
						
							|  |  |  | 	var elem = $('<div class="range"></div>') | 
					
						
							|  |  |  | 	$('<span class="title"/>') | 
					
						
							|  |  |  | 		.html(text) | 
					
						
							|  |  |  | 		.appendTo(elem) | 
					
						
							|  |  |  | 	var range = $('<input type="range">') | 
					
						
							|  |  |  | 		.attr({ | 
					
						
							|  |  |  | 			id: filter, | 
					
						
							|  |  |  | 			min: min, | 
					
						
							|  |  |  | 			max: max, | 
					
						
							|  |  |  | 			step: step, | 
					
						
							|  |  |  | 			default: dfl, | 
					
						
							|  |  |  | 		}) | 
					
						
							|  |  |  | 		.prop('normalize', normalize) | 
					
						
							|  |  |  | 		.val(dfl) | 
					
						
							|  |  |  | 		.change(function(){ | 
					
						
							|  |  |  | 			var val = this.valueAsNumber | 
					
						
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										 |  |  | 			value.val(val) | 
					
						
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										 |  |  | 			updateFilter(target, this.id, tran(val)) | 
					
						
							|  |  |  | 		}) | 
					
						
							|  |  |  | 		.appendTo(elem) | 
					
						
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										 |  |  | 	var value = $('<input type="number" class="value"/>') | 
					
						
							|  |  |  | 		.attr({ | 
					
						
							|  |  |  | 			min: min, | 
					
						
							|  |  |  | 			max: max, | 
					
						
							|  |  |  | 			step: step, | 
					
						
							|  |  |  | 		}) | 
					
						
							|  |  |  | 		.val(dfl) | 
					
						
							|  |  |  | 		.change(function(){ | 
					
						
							|  |  |  | 			range.val($(this).val()) | 
					
						
							|  |  |  | 		}) | 
					
						
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										 |  |  | 		.appendTo(elem) | 
					
						
							|  |  |  | 	$('<button class="reset">x</button>') | 
					
						
							|  |  |  | 		.click(function(){ | 
					
						
							|  |  |  | 			range.val(dfl).change() | 
					
						
							|  |  |  | 			resetFilter(target, filter) | 
					
						
							|  |  |  | 		}) | 
					
						
							|  |  |  | 		.appendTo(elem) | 
					
						
							|  |  |  | 	return elem | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | function makeLogRange(text, filter, target){ | 
					
						
							|  |  |  | 	return makeAbsRange(text, filter, target, -100, 100, 0, 0.1, r2v, true) | 
					
						
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										 |  |  | } | 
					
						
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							|  |  |  | var C = 43.47 | 
					
						
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							|  |  |  | function r2v(r){ | 
					
						
							|  |  |  | 	return Math.pow(Math.E, r/C) | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | function v2r(v){ | 
					
						
							|  |  |  | 	return Math.log(v)*C | 
					
						
							|  |  |  | } | 
					
						
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										 |  |  | $(function(){ | 
					
						
							|  |  |  | 	$('.controls') | 
					
						
							|  |  |  | 		.append(makeLogRange('Brightness:', 'brightness', '#image')) | 
					
						
							|  |  |  | 		.append(makeLogRange('Contrast:', 'contrast', '#image')) | 
					
						
							|  |  |  | 		.append(makeLogRange('Saturation:', 'saturate', '#image')) | 
					
						
							|  |  |  | 		.append(makeAbsRange('Hue:', 'hue-rotate', '#image', -180, 180, 0, 0.5, function(v){ return v+'deg' })) | 
					
						
							|  |  |  | 		.append($('<hr>')) | 
					
						
							|  |  |  | 		.append(makeAbsRange('Grayscale:', 'grayscale', '#image', 0, 1, 0, 0.01)) | 
					
						
							|  |  |  | 		.append($('<hr>')) | 
					
						
							|  |  |  | 		.append(makeAbsRange('Invert:', 'invert', '#image', 0, 1, 0, 0.01)) | 
					
						
							|  |  |  | 		.append(makeAbsRange('Sepia:', 'sepia', '#image', 0, 1, 0, 0.01)) | 
					
						
							|  |  |  | 		.append($('<hr>')) | 
					
						
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							|  |  |  | 		.append($('<button onclick="$(\'.reset\').click()">Reset all</button>')) | 
					
						
							|  |  |  | 		.append($('<hr>')) | 
					
						
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							|  |  |  | 		.append($('<div>NOTE: at this point order of operations is '+ | 
					
						
							|  |  |  | 			'sometimes segnificant -- might be good to treat the filters '+ | 
					
						
							|  |  |  | 			'as layers -- se Adobe CSS filter factory </div>')) | 
					
						
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										 |  |  | 
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							|  |  |  | 		saveState() | 
					
						
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										 |  |  | }) | 
					
						
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										 |  |  | </script> | 
					
						
							|  |  |  | <body> | 
					
						
							|  |  |  | 	<img id="image" src="image.jpg"> | 
					
						
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										 |  |  | 	<details open> | 
					
						
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										 |  |  | 		<summary>Controls</summary> | 
					
						
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										 |  |  | 		<div class="controls"> | 
					
						
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										 |  |  | 		</div> | 
					
						
							|  |  |  | 	</details> | 
					
						
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										 |  |  | 	<details open> | 
					
						
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										 |  |  | 		<summary>Snapshots</summary> | 
					
						
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										 |  |  | 		<div> | 
					
						
							|  |  |  | 			<div class="states"> | 
					
						
							|  |  |  | 			</div> | 
					
						
							|  |  |  | 			<button onclick="saveState()">Save</button> | 
					
						
							|  |  |  | 			<button onclick="clearStates()">Clear</button> | 
					
						
							|  |  |  | 		</div> | 
					
						
							|  |  |  | 	</details> | 
					
						
							|  |  |  | 
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							|  |  |  | </body> | 
					
						
							|  |  |  | </html> |