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some minor refactoring...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2013-02-19 20:08:05 +04:00
parent 025aafc177
commit 24272ae701
1 changed files with 34 additions and 10 deletions
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44
layout.js
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@ -5,7 +5,7 @@
**********************************************************************/
//var NAVIGATE_RELATIVE_TO_VISIBLE = false
var NAVIGATE_RELATIVE_TO_VISIBLE = true
//var NAVIGATE_RELATIVE_TO_VISIBLE = true
var USE_PAGE_ALIGN = true
@ -78,6 +78,8 @@ var togglePageView = createCSSClassToggler(
/************************************************** event handlers ***/
// XXX make this more universal...
// XXX should we use a callback or an event???
function makeScrollHandler(root, callback){
// local data...
@ -113,6 +115,7 @@ function makeScrollHandler(root, callback){
return false
}
// XXX add limits to this...
// XXX slow down drag when at limit...
// XXX try and make this adaptive to stay ahead of the lags...
function moveHandler(evt){
evt.preventDefault()
@ -185,6 +188,9 @@ function makeScrollHandler(root, callback){
}
return this
},
setCallback: function(func){
this.callback = func
},
// NOTE: this is updated live but not used by the system in any way...
state: 'stopped'
}
@ -195,6 +201,13 @@ function makeScrollHandler(root, callback){
/********************************************************* helpers ***/
// XXX make this more acurate...
// ...should check mode or if we are in a ribbon...
function isNavigationViewRelative(){
return getMagazineScale() < 1
}
// XXX there is something here that depends on scale that is either not
// compensated, or is over compensated...
function getMagazineOffset(page, scale, align){
@ -231,22 +244,23 @@ function getMagazineOffset(page, scale, align){
// XXX make this work for narrow and left/right alligned pages...
function getPageNumber(page){
// a page is given...
// a page is given explicitly, get the next one...
if(page != null){
return $('.page').index($(page))
}
// get the next page...
if(!NAVIGATE_RELATIVE_TO_VISIBLE){
// get the next page relative to the current...
//if(!NAVIGATE_RELATIVE_TO_VISIBLE){
if(!isNavigationViewRelative()){
return $('.page').index($('.current.page'))
// get the closest page to view...
// get the closest page to view center...
// NOTE: this ignores page aligns and only gets the page who's center
// is closer to view's center
} else {
// XXX this gets crazy when magazine is scaled...
//var s = $('.viewer').scrollLeft()
var scale = getMagazineScale()
var o = -$($('.magazine')[0]).offset().left - $('.viewer').offset().left
var W = $('.viewer').width()
var scale = getMagazineScale()
var cur = -1
var res = $('.page').map(function(i, e){
e = $(e)
@ -267,9 +281,15 @@ function setMagazineScale(scale){
var mag = $('.magazine')
var cur = $('.current.page')
var left = getMagazineOffset(cur, scale, 'center')
// XXX make this check more unversal...
// center-align ribbon view pages...
var align = scale < 1 ? 'center' : null
var left = getMagazineOffset(cur, scale, align)
setElementTransform(mag, left, scale)
return mag
}
@ -291,7 +311,11 @@ function setCurrentPage(n){
var cur = $('.current.page')
var left = getMagazineOffset(cur)
// XXX make this check more unversal...
// center-align pages in ribbon view...
var align = scale < 1 ? 'center' : null
var left = getMagazineOffset(cur, null, align)
setElementTransform($('.magazine'), left, scale)