mirror of
https://github.com/flynx/ImageGrid.git
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started playing with iScroll as an alternative to native and main scroller for FF...
Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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@ -1,11 +1,41 @@
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<!DOCTYPE html>
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<html>
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<style>
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// mark the center...
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[mark-center]:before {
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position: absolute;
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display: block;
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content: "";
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width: 5px;
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height: 5px;
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right: 50%;
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bottom: 50%;
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border-right: solid 2px attr(mark-center);
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border-bottom: solid 2px attr(mark-center);
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margin-bottom: -1px;
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margin-right: -1px;
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}
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[mark-center]:after {
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position: absolute;
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display: block;
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content: "";
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width: 5px;
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height: 5px;
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left: 50%;
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top: 50%;
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border-left: solid 2px attr(mark-center);
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border-top: solid 2px attr(mark-center);
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margin-left: -1px;
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margin-top: -1px;
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}
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/* XXX appears that there is no way to hide the scrollbar on FF...
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* ...one way around this is to use something like iScroll/Scrolly
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* on FF or where more control is needed...
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*/
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.viewer {
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position: relative;
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display: inline-block;
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border: solid 1px gray;
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@ -13,18 +43,30 @@
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height: 500px;
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overflow: hidden;
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}
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.scaler {
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position: relative;
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width: 100%;
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height: 100%;
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top: 50%;
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left: 50%;
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margin-top: -50%;
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margin-left: -50%;
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transform-origin: 50% 50%;
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overflow-x: hidden;
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overflow-y: scroll;
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-ms-overflow-style: none;
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}
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.viewer::-webkit-scrollbar {
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.scaler::-webkit-scrollbar {
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display: none;
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}
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/* This is to be used for:
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* - vrtical positioning
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* - scaling
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@ -41,13 +83,6 @@
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padding-top: 50%;
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padding-bottom: 50%;
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margin-left: -50%;
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left: 50%;
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transform-origin: 50% 50%;
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/*transform: scale(0.5);*/
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}
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@ -98,39 +133,114 @@
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<script src="../ext-lib/velocity.min.js"></script>
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<script src="../ext-lib/iscroll.js"></script>
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<script src="../ext-lib/iscroll-zoom.js"></script>
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<script src="../lib/jli.js"></script>
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<script>
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// XXX when setting origin at scales different from 1, we'll need to
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// adjust offset to compensate for the shift...
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// XXX one other simplification might be adding a new element specifically
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// dedicated to scaling...
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var centerOrigin = function(){
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var H = $('.viewer').height()
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var s = $('.viewer')[0].scrollTop
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$('.ribbon-set').css({
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'transform-origin': '50% '+ (s + H/2) +'px'
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})
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}
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// XXX these accumolate errors...
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var zoomIn = function(c){
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c = c || 1.2
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$('.ribbon-set')
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$('.scaler')
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.velocity('stop')
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.css({
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})
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.velocity({
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scale: '*='+c,
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width: '/='+c,
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height: '/='+c,
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'margin-left': '/='+c,
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'margin-top': '/='+c,
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}, 300)
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}
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var zoomOut = function(c){
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c = c || 1.2
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$('.ribbon-set')
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$('.scaler')
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.velocity('stop')
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.velocity({
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scale: '/='+c,
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width: '*='+c,
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height: '*='+c,
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'margin-left': '*='+c,
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'margin-top': '*='+c,
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}, 300)
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}
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var ISCROLL = false
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$(function(){
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var H = $('.viewer').height()
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var W = $('.viewer').width()
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// set margins to be parant and not content dependant...
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$('.scaler')
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.velocity({
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'margin-left': -W/2,
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'margin-top': -H/2,
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}, 0)
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if(ISCROLL){
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// setup iScroll...
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$('.scaler').css({
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overflow: 'hidden',
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})
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var scroll_view = new IScroll('.scaler', {
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scrollX: false,
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scrollY: true,
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mouseWheel: true,
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disableMouse: false,
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eventPassthrough: 'horizontal',
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// XXX for this to work correctly we'll need to:
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// 1) position the element correctly -- now it jumps after zoom...
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// 2) keep more of the element outside the view...
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zoom: true,
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})
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window.scroll_ribbon = []
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$('.ribbon-container')//.eq(0)
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.css({
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overflow: 'hidden',
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})
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.each(function(_, e){
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console.log(e)
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// XXX this calculates the scroll width incorrectly...
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scroll_ribbon.push(new IScroll(e, {
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scrollX: true,
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scrollY: false,
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disableMouse: false,
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// XXX need this to work in a horizontal direction...
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//mouseWheel: true,
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}))
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})
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}
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})
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</script>
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<body>
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<div class="viewer">
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<div class="viewer" mark-center="red">
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<div class="scaler">
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<div class="ribbon-set">
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<div class="ribbon-container">
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<div class="ribbon">
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@ -145,6 +255,7 @@ var zoomOut = function(c){
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</div>
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</div>
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</div>
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</div>
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</div>
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</body>
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@ -97,6 +97,32 @@ module.chainCmp = function(cmp_chain){
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}
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// Get all the accessible keys...
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//
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// This is different to Object.keys(..) in that this will return keys
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// from all the prototypes while .keys(..) will only return the keys
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// defined in the last layer.
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Object.deepKeys = function(obj){
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var res = []
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while(obj != null){
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res = res.concat(Object.keys(obj))
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obj = obj.__proto__
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}
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return res.unique()
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}
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// Make a full key set copy of an object...
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//
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// NOTE: this will not deep-copy the values...
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Object.flatCopy = function(obj){
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var res = {}
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Object.deepKeys(obj).forEach(function(key){
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res[key] = obj[key]
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})
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return res
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}
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// like .length but for sparse arrays will return the element count...
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// XXX make this a prop...
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/*
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