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another try to tame the scroll...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2013-02-13 17:27:04 +04:00
parent 387bcdf47f
commit cf4441b26d
2 changed files with 42 additions and 53 deletions
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94
layout.html
View File

@ -37,6 +37,17 @@
transition: none; transition: none;
} }
.scroller {
position: relative;
display: inline-block;
text-align: center;
width: auto;
height: 100%;
overflow: hidden;
}
/* vertical */ /* vertical */
.vertical.magazine, .vertical.magazine,
.vertical.article, .vertical.article,
@ -53,7 +64,7 @@
<script src="ext-lib/jquery.js"></script> <script src="ext-lib/jquery.js"></script>
<script src="ext-lib/jquery.scrollto.js"></script> <script src="ext-lib/jquery.scrollto.js"></script>
<!--script src="ext-lib/jquery.scrollstop.js"></script--> <script src="ext-lib/jquery.scrollstop.js"></script>
<script src="lib/jli.js"></script> <script src="lib/jli.js"></script>
@ -116,57 +127,15 @@ $(document).ready(function(){
function(k){console.log(k)})) function(k){console.log(k)}))
// XXX delta-based scrollstop does not work good on android
// both the interval and scroll event versions failed...
// XXX timeout-based scrollstop des not work correctly...
// ...for some reason the timeout function gets called like
// it's an interval...
// XXX scroll limiting did not work -- problems with page refresh...
// XXX try margin-based scrolling
// in full page view set the margin so as to only allow
// scrolling the next and previous pages (in setCurrentPage)...
/*
window.scroll_state = 'none'
window.SCROLL_STOP_THRESHOLD = 3
window.SCROLL_CHECK_INTERVAL = 50
window._scroll_offset = null
var v = $('.viewer')
setInterval(function(){
var c = v.scrollLeft()
if(scroll_state == 'kinetic'
&& ((_scroll_offset - c) <= SCROLL_STOP_THRESHOLD
|| _scroll_offset - c >= -SCROLL_STOP_THRESHOLD)){
scroll_state = 'none'
log('none...')
v.trigger('scrollstop')
}
}, SCROLL_CHECK_INTERVAL)
window._cur_page = 0
*/
/*
$('.viewer')
.on('mousedown touchstart', function(){
log('touching...')
scroll_state = 'touching'
})
.on('mouseup touchend', function(){
log('kinetic...')
scroll_state = 'kinetic'
})
*/
//if(NAVIGATE_RELATIVE_TO_VISIBLE){ //if(NAVIGATE_RELATIVE_TO_VISIBLE){
$('.viewer') $('.viewer')
.on('scrollstop', function(evt){ .on('scrollstop', function(evt){
log('scrollstop...') //log('scrollstop...')
// XXX for some reason, on android, this sets the page but // XXX for some reason, on android, this sets the page but
// does not actually scroll to it -- no animation and/or // does not actually scroll to it -- no animation and/or
// .ScrollTo does notwork... // .ScrollTo does notwork...
setCurrentPage() //setCurrentPage()
limit_scroll()
}) })
//} //}
@ -178,11 +147,31 @@ $(document).ready(function(){
runMagazineTemplates() runMagazineTemplates()
setCurrentPage(0) setCurrentPage(0)
setScrollLimit() limit_scroll()
}) })
// XXX do a margin-based version... var SCROLL_LIMIT = 800 * 1.5
function setScrollLimit(){
// XXX set the limit to next/prev page alignment...
function limit_scroll(){
var W = $('.viewer').width()
var ml = parseFloat($('.scroller').css('margin-left')) || 0
var pos = $('.viewer').scrollLeft()
var c = -ml + pos + W/2
$('.scroller').css({
'margin-left': -(c-SCROLL_LIMIT),
'width': c+SCROLL_LIMIT
})
$('.viewer').scrollLeft(pos-ml-(c-SCROLL_LIMIT))
}
function clear_limits(){
var pos = $('.viewer').scrollLeft()
var l = parseFloat($('.scroller').css('margin-left'))
$('.scroller').css({
'margin-left': '',
'width': ''
})
$('.viewer').scrollLeft(pos - l)
} }
</script> </script>
@ -191,8 +180,8 @@ function setScrollLimit(){
<body> <body>
<div class="viewer"> <div class="viewer">
<!--div class="_scaler">
<div class="_aligner"--> <div class='scroller'>
<div class="magazine" name="PortableMag"> <div class="magazine" name="PortableMag">
<div class="cover page"> <div class="cover page">
@ -554,9 +543,8 @@ function setScrollLimit(){
</div> </div>
</div> </div>
</div>
<!--/div>
</div-->
</div> </div>
</body> </body>

1
lib/jli.js
View File

@ -184,6 +184,7 @@ function unanimated(obj, func, time){
if(time == null){ if(time == null){
time = 5 time = 5
} }
obj = $(obj)
obj.addClass('unanimated') obj.addClass('unanimated')
var res = func.apply(func, arguments) var res = func.apply(func, arguments)
setTimeout(function(){obj.removeClass('unanimated')}, time) setTimeout(function(){obj.removeClass('unanimated')}, time)