mirror of
https://github.com/flynx/PortableMag.git
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91 lines
2.0 KiB
JavaScript
Executable File
91 lines
2.0 KiB
JavaScript
Executable File
/**********************************************************************
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*
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* XXX add copyright and licence info...
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*
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**********************************************************************/
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/********************************************************** layout ***/
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var togglePageFitMode = createCSSClassToggler(
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'.viewer',
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'.page-fit-to-viewer',
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function(action){
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if(action == 'on'){
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console.log('fitting pages to view...')
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var n = getPageNumber()
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$('.page:not(.no-resize)').width($('.viewer').width())
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setCurrentPage(n)
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} else {
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console.log('restoring page sizes...')
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var n = getPageNumber()
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$('.page:not(.no-resize)').width('')
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setCurrentPage(n)
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}
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})
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/********************************************************* helpers ***/
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function getPageNumber(page){
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if(page != null){
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return $('.page').index($(page))
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}
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var s = $('.viewer').scrollLeft()
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var W = $('.viewer').width()
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var cur = -1
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var res = $('.page').map(function(i, e){
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e = $(e)
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var l = e.position().left
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var w = e.width()
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return Math.abs((l+(w/2)) - (s+(W/2)))
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})
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cur = res.index(Math.min.apply(Math, res))
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return cur
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}
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/********************************************************* actions ***/
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function setCurrentPage(n){
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if(n == null){
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n = getPageNumber()
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}
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var l = $('.page').length
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n = n < 0 ? l - n : n
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n = n < -l ? 0 : n
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n = n >= l ? l - 1 : n
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$('.current.page').removeClass('current')
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$($('.page')[n]).addClass('current')
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var cur = $('.current.page')
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var offset = $('.viewer').width()/2 - cur.width()/2
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cur.ScrollTo({
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offsetLeft: offset
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})
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}
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function nextPage(){
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setCurrentPage(getPageNumber()+1)
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}
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function prevPage(){
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var n = getPageNumber()-1
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n = n < 0 ? 0 : n
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setCurrentPage(n)
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}
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function firstPage(){
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setCurrentPage(0)
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}
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function lastPage(){
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setCurrentPage(-1)
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}
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/*********************************************************************/
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// vim:set ts=4 sw=4 :
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