2013-11-28 09:41:53 +04:00
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<html>
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<style>
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button,
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details {
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border: solid 1px gray;
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border-radius: 4px;
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margin: 1px;
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background: white;
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}
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2013-11-29 03:33:09 +04:00
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details {
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width: 500px;
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}
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2013-11-28 09:41:53 +04:00
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details > div {
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margin: 10px;
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}
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summary {
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padding-left: 3px;
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background: #ddd;
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}
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input[type=range] {
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width: 300px;
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}
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2013-11-29 03:33:09 +04:00
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/* XXX this is not live...
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2013-11-28 10:04:33 +04:00
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input[type=range]:after {
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content: attr(value);
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2013-11-28 14:54:26 +04:00
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color: black;
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2013-11-28 10:04:33 +04:00
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}
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2013-11-29 03:33:09 +04:00
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*/
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2013-11-28 09:41:53 +04:00
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div > span:first-child {
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display: inline-block;
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width: 100px;
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}
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2013-11-28 15:46:28 +04:00
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/* range syling... */
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input[type='range'] {
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-webkit-appearance: none !important;
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background: silver;
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height: 4px;
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border: solid 1px gray;
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border-radius: 2px;
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}
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input[type='range']::-webkit-slider-thumb {
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-webkit-appearance: none !important;
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background: white;
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height: 15px;
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width: 15px;
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border: solid 1px gray;
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border-radius: 50%;
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}
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2013-11-29 03:33:09 +04:00
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.value {
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2013-11-29 15:34:54 +04:00
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-webkit-appearance: none !important;
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2013-11-29 03:33:09 +04:00
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display: inline-block;
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width: 40px;
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text-align: right;
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margin-left: 5px;
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margin-right: 5px;
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2013-11-29 15:34:54 +04:00
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background: white;
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border: none;
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border-radius: 2px;
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}
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input::-webkit-outer-spin-button,
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input::-webkit-inner-spin-button {
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-webkit-appearance: none !important;
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/*
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display: inline-block;
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background: white;
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border-radius: 2px;
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border: solid 1px gray;
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width: 10px;
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*/
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2013-11-29 03:33:09 +04:00
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}
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2013-11-28 15:46:28 +04:00
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2013-11-29 15:34:54 +04:00
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2013-11-28 09:41:53 +04:00
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</style>
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<script src="jquery.js"></script>
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<script>
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function updateFilter(e, f, v){
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2013-11-29 03:33:09 +04:00
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e = $(e)
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2013-11-28 09:41:53 +04:00
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var state = e
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.css('-webkit-filter')
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state = state == 'none' ? '' : state + ' '
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2013-11-29 03:33:09 +04:00
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//state = state.replace(RegExp(f+'\\s*\\([^\\)]*\\)'), '')
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//state += f+'('+v+')'
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if(RegExp(f).test(state)){
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state = state.replace(RegExp(f+'\\s*\\([^\\)]*\\)'), f+'('+v+')')
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} else {
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state += f+'('+v+')'
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}
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2013-11-28 09:41:53 +04:00
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e.css({
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'-webkit-filter': state,
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'filter': state
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})
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return v
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}
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2013-11-29 03:33:09 +04:00
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function resetFilter(e, f){
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e = $(e)
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var state = e
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.css('-webkit-filter')
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state = state == 'none' ? '' : state + ' '
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state = state.replace(RegExp(f+'\\s*\\([^\\)]*\\)'), '').trim()
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e.css({
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'-webkit-filter': state,
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'filter': state
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})
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return e
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}
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2013-11-28 09:41:53 +04:00
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function resetPrevRange(e){
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e = $(e).prev('input[type=range]')
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e.val(e.attr('default'))
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.change()
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}
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2013-11-28 10:04:33 +04:00
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// XXX this does not set hue correctly...
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2013-11-28 09:41:53 +04:00
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function loadSliderState(){
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var state = $('#image')
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.css('-webkit-filter')
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.split(/\s*\(\s*|\s*\)\s*/g)
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.reverse()
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.slice(1)
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// reset sliders do defaults...
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$('input[type=range]').each(function(i, e){
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e = $(e)
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e.val(e.attr('default'))
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})
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// set the saved values...
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while(state.length > 0){
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2013-11-28 10:04:33 +04:00
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var e = $('#'+state.pop())
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2013-11-29 01:32:20 +04:00
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if(e.prop('normalize')){
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e.val(v2r(parseFloat(state.pop())))
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} else {
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e.val(parseFloat(state.pop()))
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}
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2013-11-28 09:41:53 +04:00
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}
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}
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2013-11-29 03:33:09 +04:00
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2013-11-28 09:41:53 +04:00
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function saveState(){
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var l = $('.state').length
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var state = $('#image').css('-webkit-filter')
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$('<button></button>')
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.text(l)
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.addClass('state '+l)
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.attr('state', state)
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.click(function(){
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$('#image').css('-webkit-filter', state)
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loadSliderState()
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})
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.appendTo($('.states'))
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}
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function clearStates(){
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$('.state').remove()
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}
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2013-11-29 03:33:09 +04:00
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function makeAbsRange(text, filter, target, min, max, dfl, step, tran, normalize){
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tran = tran == null ? function(v){return v} : tran
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normalize = normalize == null ? false : true
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var elem = $('<div class="range"></div>')
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$('<span class="title"/>')
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.html(text)
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.appendTo(elem)
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var range = $('<input type="range">')
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.attr({
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id: filter,
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min: min,
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max: max,
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step: step,
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default: dfl,
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})
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.prop('normalize', normalize)
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.val(dfl)
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.change(function(){
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var val = this.valueAsNumber
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2013-11-29 15:34:54 +04:00
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value.val(val)
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2013-11-29 03:33:09 +04:00
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updateFilter(target, this.id, tran(val))
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})
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.appendTo(elem)
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2013-11-29 15:34:54 +04:00
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var value = $('<input type="number" class="value"/>')
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.attr({
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min: min,
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max: max,
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step: step,
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})
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.val(dfl)
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.change(function(){
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range.val($(this).val())
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})
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2013-11-29 03:33:09 +04:00
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.appendTo(elem)
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$('<button class="reset">x</button>')
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.click(function(){
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range.val(dfl).change()
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resetFilter(target, filter)
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})
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.appendTo(elem)
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return elem
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}
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function makeLogRange(text, filter, target){
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return makeAbsRange(text, filter, target, -100, 100, 0, 0.1, r2v, true)
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2013-11-29 01:32:20 +04:00
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}
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var C = 43.47
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function r2v(r){
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return Math.pow(Math.E, r/C)
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}
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function v2r(v){
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return Math.log(v)*C
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}
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2013-11-29 03:33:09 +04:00
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$(function(){
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$('.controls')
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.append(makeLogRange('Brightness:', 'brightness', '#image'))
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.append(makeLogRange('Contrast:', 'contrast', '#image'))
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.append(makeLogRange('Saturation:', 'saturate', '#image'))
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.append(makeAbsRange('Hue:', 'hue-rotate', '#image', -180, 180, 0, 0.5, function(v){ return v+'deg' }))
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.append($('<hr>'))
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.append(makeAbsRange('Grayscale:', 'grayscale', '#image', 0, 1, 0, 0.01))
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.append($('<hr>'))
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.append(makeAbsRange('Invert:', 'invert', '#image', 0, 1, 0, 0.01))
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.append(makeAbsRange('Sepia:', 'sepia', '#image', 0, 1, 0, 0.01))
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.append($('<hr>'))
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.append($('<button onclick="$(\'.reset\').click()">Reset all</button>'))
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.append($('<hr>'))
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.append($('<div>NOTE: at this point order of operations is '+
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'sometimes segnificant -- might be good to treat the filters '+
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'as layers -- se Adobe CSS filter factory </div>'))
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2013-11-29 15:34:54 +04:00
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saveState()
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2013-11-29 03:33:09 +04:00
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})
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2013-11-28 09:41:53 +04:00
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</script>
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<body>
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<img id="image" src="image.jpg">
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2013-11-28 10:04:33 +04:00
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<details open>
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2013-11-28 09:41:53 +04:00
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<summary>Controls</summary>
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2013-11-29 03:33:09 +04:00
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<div class="controls">
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2013-11-28 09:41:53 +04:00
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</div>
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</details>
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2013-11-29 03:33:09 +04:00
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<details open>
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2013-11-29 01:32:20 +04:00
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<summary>Snapshots</summary>
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2013-11-28 09:41:53 +04:00
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<div>
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<div class="states">
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</div>
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<button onclick="saveState()">Save</button>
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<button onclick="clearStates()">Clear</button>
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</div>
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</details>
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</body>
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</html>
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