2013-04-26 05:30:56 +04:00
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<html>
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<head>
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<title>ImageGrid.Viewer</title>
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<style>
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.viewer {
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position: relative;
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width: 800px;
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height: 600px;
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2013-04-29 01:59:59 +04:00
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overflow: hidden;
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2013-04-26 05:30:56 +04:00
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border: solid blue 1px;
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}
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.ribbon-set {
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2013-04-29 01:59:59 +04:00
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position: absolute;
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2013-04-26 05:30:56 +04:00
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}
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.ribbon-set:empty:after {
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display: block;
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top: 0px;
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left: 0px;
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width: 100%;
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height: 100%;
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content: "Empty";
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text-align: center;
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}
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.ribbon {
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position: relative;
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display: block;
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height: auto;
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min-width: 0px;
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overflow: visible;
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white-space: nowrap;
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font-size: 0;
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/*
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margin-top: 20px;
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margin-bottom: 20px;
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*/
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}
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.ribbon:first-child {
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margin-top: 0px;
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}
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.ribbon:last-child {
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margin-bottom: 0px;
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}
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/* XXX do we actually need this? */
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.current.ribbon {
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}
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.image {
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position: relative;
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display: inline-block;
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vertical-align: middle;
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text-align;left;
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2013-04-29 19:12:19 +04:00
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width: 300px;
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height: 300px;
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2013-04-26 05:30:56 +04:00
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font-size: 12pt;
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background: black;
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2013-04-29 19:12:19 +04:00
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box-sizing: border-box;
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2013-04-26 05:30:56 +04:00
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border: solid gray 1px;
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color: white;
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}
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.current.image {
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background: red;
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}
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2013-04-29 19:12:19 +04:00
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/* XXX this misbehaves... (happens with page zoom) */
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.marked.image:after {
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display: block;
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position: absolute;
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content: "";
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font-size: 0pt;
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border: none;
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/* XXX this is not uniform circle for some reason... (connected with page zoom) */
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width: 5px;
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height: 5px;
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bottom: 5px;
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right: 5px;
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border-radius: 50%;
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background: blue;
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}
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2013-04-26 05:30:56 +04:00
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</style>
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<script src="jquery.js"></script>
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2013-04-26 23:07:07 +04:00
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<script src="lib/jli.js"></script>
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<script src="lib/keyboard.js"></script>
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2013-04-26 05:30:56 +04:00
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<script>
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/*
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Viewer Generation III
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Split the API into the following sections:
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- main control actions
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do main domain tasks like image and ribbon manipulation.
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- serialization and deserialization
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load and save data
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- UI
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basic align, animation and modes
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*/
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2013-04-29 19:12:19 +04:00
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var toggleImageMark = createCSSClassToggler('.current.image', 'marked')
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2013-04-26 05:30:56 +04:00
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function createImage(n){
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if(n == null){
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if(window._n == null){
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window._n = 0
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}
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n = _n
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_n += 1
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}
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return $('<div order="'+n+'" class="image"/>')
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}
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function createRibbon(){
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return $('<div class="ribbon"/>')
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}
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// NOTE: if this returns null, it means that the element is smallest in
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// target ribbon -- first position.
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function getImageBefore(image, ribbon){
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image = $(image)
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var images = $(ribbon).find('.image')
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var order = image.attr('order')
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var prev = null
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images.each(function(){
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if(order < $(this).attr('order')){
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return false
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}
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prev = this
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})
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return prev
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}
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function shiftTo(image, ribbon){
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var target = getImageBefore(image, ribbon)
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var cur_ribbon = image.closest('.ribbon')
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// insert before the first image if nothing is before the target...
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if(target == null){
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image.insertBefore($(ribbon).find('.image').first())
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} else {
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image.insertAfter(target)
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}
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// if removing last image out of a ribbon, remove the ribbon....
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if(cur_ribbon.find('.image').length == 0){
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cur_ribbon.remove()
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}
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return image
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}
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function shiftImage(direction, image, force_create_ribbon){
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if(image == null){
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// XXX need to make this context specific...
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image = $('.current.image')
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} else {
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image = $(image)
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}
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var ribbon = image.closest('.ribbon')[direction]('.ribbon')
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// need to create a new ribbon...
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if(ribbon.length == 0 || force_create_ribbon == true){
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ribbon = createRibbon()['insert' + (direction == 'prev'
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? 'Before'
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: 'After')](image.closest('.ribbon'))
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ribbon.append(image)
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} else {
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shiftTo(image, ribbon)
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}
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return image
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}
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// short-hand methods...
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function shiftImageUp(image){
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return shiftImage('prev', image)
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}
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function shiftImageDown(image){
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return shiftImage('next', image)
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}
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function shiftImageUpNewRibbon(image){
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return shiftImage('prev', image, true)
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}
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function shiftImageDownNewRibbon(image){
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return shiftImage('next', image, true)
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}
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// TODO manual image ordering (shiftLeft/shiftRight functions)
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// XXX
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2013-04-26 05:33:38 +04:00
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function focusImage(image){
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image.closest('.viewer').find('.current.image').removeClass('current')
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return image.addClass('current')
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}
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2013-04-26 05:30:56 +04:00
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2013-04-26 23:07:07 +04:00
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// Alignment API...
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2013-04-29 01:59:59 +04:00
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// ...tried to make this as brain-dead-stupidly-simple as possible...
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function relativeVisualPosition(outer, inner){
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outer = $(outer).offset()
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inner = $(inner).offset()
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return {
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top: inner.top - outer.top,
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left: inner.left - outer.left
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}
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}
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// This appears to work well with scaling...
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2013-04-29 02:31:01 +04:00
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// XXX make this more configurable...
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2013-04-29 02:57:11 +04:00
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// XXX this only works for square images...
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2013-04-29 01:59:59 +04:00
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function centerImage(image, mode){
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if(mode == null){
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//mode = 'css'
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mode = 'animate'
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}
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if(image == null){
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image = $('.current.image')
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}
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var viewer = $('.viewer')
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2013-04-29 02:31:01 +04:00
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// XXX should these be "inner"???
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2013-04-29 01:59:59 +04:00
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var W = viewer.innerWidth()
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var H = viewer.innerHeight()
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var ribbons = $('.ribbon-set')
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var scale = getElementScale(ribbons)
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2013-04-29 02:57:11 +04:00
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// NOTE: these are scalable, this needs to get normalized...
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2013-04-29 02:31:01 +04:00
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var w = image.outerWidth()*scale
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var h = image.outerHeight()*scale
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2013-04-29 01:59:59 +04:00
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var pos = relativeVisualPosition(viewer, image)
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// zero out top/left if set to anything other than a specific number...
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var t = parseFloat(ribbons.css('top'))
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t = t ? t : 0
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var l = parseFloat(ribbons.css('left'))
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l = l ? l : 0
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// do the actual work...
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return ribbons[mode]({
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'top': t - pos.top + (H - h)/2,
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2013-04-29 02:57:11 +04:00
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'left': l - pos.left + (W - w)/2
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2013-04-29 01:59:59 +04:00
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})
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2013-04-26 23:07:07 +04:00
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}
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2013-04-29 02:31:01 +04:00
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function fitNImages(n){
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var image = $('.current.image')
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var size = image.outerHeight(true)
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var viewer = $('.viewer')
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var W = viewer.innerWidth()
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var H = viewer.innerHeight()
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var scale = Math.min(W / (size * n), H / size)
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2013-04-29 02:57:11 +04:00
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// XXX if animating, the next two likes must be animated together...
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2013-04-29 02:31:01 +04:00
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setElementScale($('.ribbon-set'), scale)
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centerImage(image, 'css')
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}
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2013-04-29 02:57:11 +04:00
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// XXX use CSS toggler...
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// XXX revise: does extra stuff...
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function toggleImageProportions(mode){
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var image = $('.image')
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var h = image.outerHeight(true)
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var w = image.outerWidth(true)
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if(mode == '?'){
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return h != w ? 'viewer' : 'square'
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// square...
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} else if(h != w || mode == 'square'){
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var size = Math.min(w, h)
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image.css({
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width: size,
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height: size
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})
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centerImage(null, 'css')
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return 'square'
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// viewer size...
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} else {
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var viewer = $('.viewer')
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var W = viewer.innerWidth()
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var H = viewer.innerHeight()
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if(W > H){
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image.css('width', W * h/H)
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} else {
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image.css('height', H * w/W)
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}
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centerImage(null, 'css')
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return 'viewer'
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}
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}
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2013-04-26 05:30:56 +04:00
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2013-04-29 01:59:59 +04:00
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2013-04-26 05:30:56 +04:00
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// NOTE: this is on purpose done relative...
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function clickHandler(evt){
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var img = $(evt.target).closest('.image')
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2013-04-29 01:59:59 +04:00
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centerImage(
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focusImage(img))
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2013-04-26 05:30:56 +04:00
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}
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2013-04-29 02:31:01 +04:00
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2013-04-26 05:30:56 +04:00
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// setup...
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$(function(){
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// populate the viewer...
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var r = createRibbon()
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var images = []
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for(var i=0; i < 40; i++){
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images.push(createImage().text(i)[0])
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}
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r.append($(images))
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var rr = r.clone()
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var rrr = r.clone()
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$('.ribbon-set')
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.append(r)
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.append(rr)
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.append(rrr)
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// NOTE: this is global so as to not to add any extra complexity to
|
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|
|
// the internal workings...
|
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|
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|
$('.viewer').click(clickHandler)
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})
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</script>
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</head>
|
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|
|
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<body>
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|
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|
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|
|
|
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|
<!-- This is the basic viewer structure...
|
|
|
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|
|
|
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|
Unpopulated
|
|
|
|
|
NOTE: there can be only .ribbon-set element.
|
|
|
|
|
|
|
|
|
|
<div class="viewer">
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|
|
|
<div class="ribbon-set"></div>
|
|
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</div>
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|
|
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|
|
Populated
|
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|
<div class="viewer">
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|
|
|
|
<div class="ribbon-set">
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|
|
|
|
<div class="ribbon">
|
|
|
|
|
<div class="image"></div>
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|
<div class="image"></div>
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|
|
|
</div>
|
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|
|
<div class="ribbon">
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|
|
<div class="image"></div>
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|
|
|
<div class="current image"></div>
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|
|
<div class="image"></div>
|
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|
|
<div class="image"></div>
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</div>
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</div>
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|
</div>
|
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|
|
-->
|
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|
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|
|
|
|
|
<div class="viewer">
|
|
|
|
|
<div class="ribbon-set"></div>
|
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|
|
|
</div>
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|
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|
<!-- vim:set ts=4 sw=4 spell : -->
|
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|
|
</body>
|
|
|
|
|
</html>
|
