mirror of
https://github.com/flynx/PortableMag.git
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1082 lines
29 KiB
JavaScript
Executable File
1082 lines
29 KiB
JavaScript
Executable File
/**********************************************************************
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* JavaScript Lib
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* at this point this is just a place I put most of the generic stuff I
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* use.
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*
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* P.S. the name "jli" just stands for Java script LIb, like how it
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* looks...
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**********************************************************************/
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//var DEBUG = DEBUG != null ? DEBUG : true
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/*********************************************************************/
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// this will create a function that will cycle through a class_list on elem
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// calling the optional callbacks before and/or after.
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// if class_list is given as a string, then this will create a toggler that
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// will turn the given class on the element on and off.
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//
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// elem is a jquery compatible object; default use-case: a css selector.
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//
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// if class_list is a string, the resulting function understands the
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// folowing arguments:
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// - <index> : 0 for 'off' and 1 for 'on' (see below)
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// - 'on' : switch mode on -- add class
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// - 'off' : switch mode off -- remove class
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// - '?' : return current state ('on'|'off')
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// - no arguments : toggle the state
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//
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// otherwise, if class_list is a list of strings:
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// - <index> : explicitly set the state to index in class_list
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// - <class-name> : explicitly set a class from the list
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// - '?' : return current state ('on'|'off')
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// - no arguments : set next state in cycle
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//
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// NOTE: a special class name 'none' means no class is set, if it is present
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// in the class_list then that state will be with all other state
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// classes removed.
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// NOTE: <class-name> must be an exact match to a string given in class_list
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// NOTE: of only one callback is given then it will be called after the
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// class change...
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// a way around this is to pass an empty function as callback_b
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//
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function createCSSClassToggler(elem, class_list, callback_a, callback_b){
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var bool_action = false
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if(typeof(class_list) == typeof('')){
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class_list = ['none', class_list]
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bool_action = true
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}
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if(callback_b == null){
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var callback_pre = null
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var callback_post = callback_a
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} else {
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var callback_pre = callback_a
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var callback_post = callback_b
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}
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// XXX make this generic...
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var func = function(action){
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elem = $(elem)
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// option number...
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if(typeof(action) == typeof(1)){
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// range check...
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if(action < 0 || action >= class_list.length){
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return null
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}
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if(bool_action){
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action = action == 0 ? 'off' : 'on'
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} else {
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action = class_list[action]
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}
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}
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// we need to get the current state...
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if(action == null || action == '?'){
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// get current state...
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var cur = 'none'
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for(var i=0; i < class_list.length; i++){
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if(elem.hasClass(class_list[i])){
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cur = class_list[i]
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break
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}
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}
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// just asking for info...
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if(action == '?'){
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return bool_action ? (cur == 'none' ? 'off' : 'on') : cur
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}
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// invalid action...
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} else if((bool_action && ['on', 'off'].indexOf(action) == -1)
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|| (!bool_action && class_list.indexOf(action) == -1)){
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return null
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}
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var cls = bool_action ? class_list[1] : action
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// get the right class...
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if(action == null){
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var i = class_list.indexOf(cur)+1
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i = i == -1 ? 0 : i
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i = i == class_list.length ? 0 : i
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cls = class_list[i]
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if(bool_action){
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action = cls == 'none' ? 'off' : 'on'
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} else {
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action = cls
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}
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}
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// pre callback...
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if(callback_a != null){
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callback_a(action)
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}
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// update the element...
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elem.removeClass(class_list.join(' '))
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if(cls != 'none' && action != 'off'){
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elem.addClass(cls)
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}
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// post callback...
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if(callback_b != null){
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callback_b(action)
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}
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return action
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}
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func.class_list = class_list
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if(bool_action){
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func.doc = 'With no arguments this will toggle between "on" and '+
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'"off".\n'+
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'If either "on" or "off" are given then this will switch '+
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'to that mode.\n'+
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'If "?" is given, this will return either "on" or "off" '+
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'depending on the current state.'
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}else{
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func.doc = 'With no arguments this will toggle between '+
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class_list +' in cycle.\n' +
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'if any of the state names or its number is given then that '+
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'state is switched on.'+
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'If "?" is given, this will return the current state.'
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}
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return func
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}
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// show a jQuary opject in viewer overlay...
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// XXX need to set .scrollTop(0) when showing different UI...
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// ...and not set it when the UI is the same
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// XXX this must create it's own overlay...
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function showInOverlay(obj){
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obj.click(function(){ return false })
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// XXX
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$('.viewer').addClass('overlay-mode')
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// clean things up...
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$('.overlay .content').children().remove()
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// put it in the overlay...
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$('.overlay .content').append(obj)
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// prepare the overlay...
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$('.overlay')
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.one('click', function(){
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$('.overlay')
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.fadeOut(function(){
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$('.overlay .content')
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.children()
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.remove()
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$('.overlay-mode').removeClass('overlay-mode')
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})
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})
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.fadeIn()
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return obj
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}
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function overlayMessage(text){
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return showInOverlay($('<div class="overlay-message">' +text+ '</div>'))
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}
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function unanimated(obj, func, time){
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return function(){
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if(time == null){
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time = 5
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}
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obj = $(obj)
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obj.addClass('unanimated')
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var res = func.apply(func, arguments)
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setTimeout(function(){obj.removeClass('unanimated')}, time)
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return res
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}
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}
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// NOTE: this will only use the first element in a set.
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// NOTE: if no element is given this will return null.
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function makeCSSVendorAttrGetter(attr, dfl, callback){
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return function(elem){
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elem = $(elem)
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if(elem.length == 0){
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return null
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}
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// using the attr...
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var vendors = ['O', 'Moz', 'ms', 'webkit']
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var data = elem[0].style[attr]
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// go through vendor prefixes... (hate this!)
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if(!data || data == 'none'){
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for(var i in vendors){
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data = elem[0].style[vendors[i] + attr.capitalize()]
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if(data && data != 'none'){
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break
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}
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}
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}
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// no data is set...
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if(!data || data == 'none'){
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return dfl
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}
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return callback(data)
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}
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}
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// Return a scale value for the given element(s).
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// NOTE: this will only return a single scale value...
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var getElementScale = makeCSSVendorAttrGetter(
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'transform',
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1,
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function(data){
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return parseFloat((/(scale|matrix)\(([^),]*)\)/).exec(data)[2])
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})
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var getElementShift = makeCSSVendorAttrGetter(
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'transform',
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{left: 0, top: 0},
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function(data){
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res = /(translate\(|matrix\([^,]*,[^,]*,[^,]*,[^,]*,)([^,]*),([^\)]*)\)/.exec(data)
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return {
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left: parseFloat(res[2]),
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top: parseFloat(res[3])
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}
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})
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var DEFAULT_TRANSITION_DURATION = 200
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var getElementTransitionDuration = makeCSSVendorAttrGetter(
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'transitionDuration',
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DEFAULT_TRANSITION_DURATION,
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parseInt)
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var USE_3D_TRANSFORM = true
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// NOTE: at this point this works only on the X axis...
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function setElementTransform(elem, offset, scale, duration){
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elem = $(elem)
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var t3d = USE_3D_TRANSFORM ? 'translateZ(0px)' : ''
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if(offset == null){
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offset = getElementShift(elem)
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// number -- only the x coord...
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} else if(typeof(offset) == typeof(1)){
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offset = {
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left: offset,
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top: 0
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}
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// array...
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} else if(offset.indexOf){
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offset = {
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left: offset[0] ? offset[0] : 0,
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top: offset[1] ? offset[1] : 0
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}
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}
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if(scale == null){
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var scale = getElementScale(elem)
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}
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if(USE_TRANSFORM){
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var transform = 'translate('+ Math.round(offset.left) +'px, '+ Math.round(offset.top) +'px) scale('+ scale +') ' + t3d
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elem.css({
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'-ms-transform' : transform,
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'-webkit-transform' : transform,
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'-moz-transform' : transform,
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'-o-transform' : transform,
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'transform' : transform,
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// XXX can we avoid this here??
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left: 0,
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// XXX is this correct???
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top: ''
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}, duration)
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} else {
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var transform = 'translate(0px, 0px) scale('+ scale +') ' + t3d
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elem.css({
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// NOTE: this will be wrong during a transition, that's why we
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// can pass the pre-calculated offset as an argument...
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left: Math.round(offset.left),
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top: Math.round(offset.top),
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// XXX can we avoid this here??
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'-ms-transform' : transform,
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'-webkit-transform' : transform,
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'-moz-transform' : transform,
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'-o-transform' : transform,
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'transform' : transform,
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}, duration)
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}
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return elem
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}
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// XXX account for other transitions...
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function setElementScale(elem, scale){
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return setElementTransform(elem, null, scale)
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}
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function setTransitionEasing(elem, ease){
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if(typeof(ms) == typeof(0)){
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ms = ms + 'ms'
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}
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return elem.css({
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'transition-timing-function': ease,
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'-moz-transition-timing-function': ease,
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'-o-transition-timing-function': ease,
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'-ms-transition-timing-function': ease,
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'-webkit-transition-timing-function': ease
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})
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}
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function setTransitionDuration(elem, ms){
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if(typeof(ms) == typeof(0)){
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ms = ms + 'ms'
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}
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return elem.css({
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'transition-duration': ms,
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'-moz-transition-duration': ms,
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'-o-transition-duration': ms,
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'-ms-transition-duration': ms,
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'-webkit-transition-duration': ms
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})
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}
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/************************************************* keyboard handler **/
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// NOTE: don't understand why am I the one who has to write this...
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var SPECIAL_KEYS = {
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// Special Keys...
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9: 'Tab', 33: 'PgUp', 45: 'Ins',
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13: 'Enter', 34: 'PgDown', 46: 'Del',
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16: 'Shift', 35: 'End', 80: 'Backspace',
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17: 'Ctrl', 36: 'Home', 91: 'Win',
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18: 'Alt', 37: 'Right', 93: 'Menu',
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20: 'Caps Lock',38: 'Up',
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27: 'Esc', 39: 'Left',
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32: 'Space', 40: 'Down',
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// Function Keys...
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112: 'F1', 116: 'F5', 120: 'F9',
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113: 'F2', 117: 'F6', 121: 'F10',
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114: 'F3', 118: 'F7', 122: 'F11',
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115: 'F4', 119: 'F8', 123: 'F12',
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}
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// XXX some keys look really wrong...
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function toKeyName(code){
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// check for special keys...
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var k = SPECIAL_KEYS[code]
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if(k != null){
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return k
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}
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// chars...
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k = String.fromCharCode(code)
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if(k != ''){
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return k.toLowerCase()
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}
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return null
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}
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// if set to false the event handlers will always return false...
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var KEYBOARD_HANDLER_PROPAGATE = true
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/* Basic key format:
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*
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* <key-code> : <callback>,
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*
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* <key-code> : {
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* 'default': <callback>,
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* // a modifier can be any single modifier, like shift or a
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* // combination of modifers like 'ctrl+shift', given in order
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* // of priority.
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* // supported modifiers are (in order of priority):
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* // - ctrl
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* // - alt
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* // - shift
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* <modifer>: [...]
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* },
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*
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* <key-code> : [
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* // this can be any type of handler except for an alias...
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* <handler>,
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* <doc>
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* ],
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*
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* // alias...
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* <key-code-a> : <key-code-b>,
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*
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* XXX might need to add meta information to generate sensible help...
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*/
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function makeKeyboardHandler(keybindings, unhandled){
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if(unhandled == null){
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//unhandled = function(){return false}
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unhandled = function(){return KEYBOARD_HANDLER_PROPAGATE}
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}
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return function(evt){
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var did_handling = false
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var res = null
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for(var mode in keybindings){
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if($(mode).length > 0){
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var bindings = keybindings[mode]
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var key = evt.keyCode
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if(bindings.ignore == '*'
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|| bindings.ignore != null && bindings.ignore.indexOf(key) != -1){
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// return true
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res = res == null ? true : res
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did_handling = true
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continue
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}
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// XXX ugly...
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var modifers = evt.ctrlKey ? 'ctrl' : ''
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modifers += evt.altKey ? (modifers != '' ? '+alt' : 'alt') : ''
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modifers += evt.shiftKey ? (modifers != '' ? '+shift' : 'shift') : ''
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var handler = bindings[key]
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// alias...
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while (typeof(handler) == typeof(123)) {
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handler = bindings[handler]
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}
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// no handler...
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if(handler == null){
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continue
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}
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// Array, lisp style with docs...
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// XXX for some odd reason in chrome typeof([]) == typeof({})!!!
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if(typeof(handler) == typeof([]) && handler.constructor.name == 'Array'){
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// we do not care about docs here, so just get the handler...
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handler = handler[0]
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}
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// complex handler...
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if(typeof(handler) == typeof({})){
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var callback = handler[modifers]
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if(callback == null){
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callback = handler['default']
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}
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if(callback != null){
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res = callback()
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did_handling = true
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continue
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}
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} else {
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// simple callback...
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res = handler()
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did_handling = true
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continue
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}
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}
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}
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if(!did_handling){
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// key is unhandled by any modes...
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return unhandled(key)
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} else {
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// XXX should we handle multiple hits???
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return KEYBOARD_HANDLER_PROPAGATE&&res?true:false
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}
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}
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}
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// click threshold in pixels, if the distance between start and end is
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// less than this, the whole event is considered a click and not a
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// drag/swipe...
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var CLICK_THRESHOLD = 10
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// if the amount of time to wait beween start and end is greater than this
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// the event is considered a long click.
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// NOTE: this will not auto-fire the event, the user MUST release first.
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var LONG_CLICK_THRESHOLD = 400
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// the maximum amount of time between clicks to count them together.
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// NOTE: if multi-clicks are disabled this has no effect.
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// NOTE: this is reset by the timeout explicitly set in the handler...
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// NOTE: this is the timeout between two consecutive clicks and not the total.
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// NOTE: if multiple clicks are enabled this will introduce a lag after
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// each click (while we wait for the next), so keep this as small
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// as possible.
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var MULTI_CLICK_TIMEOUT = 200
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// the amount of time between finger releases.
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// NOTE: when this is passed all the fingers released before are ignored.
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var MULTITOUCH_RELEASE_THRESHOLD = 100
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// XXX add a resonable cancel scheme...
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// ... something similar to touch threshold but bigger...
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// XXX handle multiple touches...
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// - timeout on lift to count fingers...
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// XXX setup basic styles for the contained element...
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// XXX revise...
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// XXX test on other devices...
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// XXX BUG: on landing a second finger while scrolling the things goes
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// haywhire...
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// ...check if this is gone...
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// XXX add something like a scrollTo that would understand elements as
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// well as explicit positions.
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// XXX split this into a seporate lib...
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function makeScrollHandler(root, config){
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root = $(root)
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// local data...
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var ignoring = false
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// XXX this and scroller.state are redundent...
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var scrolling = false
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var touch = false
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var touches = 0
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var max_dx = 0
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var max_dy = 0
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var cancelThreshold, scrolled
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// initial state...
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, start_x, start_y, start_t
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// previous state...
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, prev_x, prev_y, prev_t
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// current state...
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, x, y, t
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// state delta...
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, dx, dy, dt
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, shift
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, scale
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//, bounds
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function startMoveHandler(evt){
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var options = scroller.options
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// ignore...
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if(options.ignoreElements
|
|
&& $(evt.target).closest(options.ignoreElements).length > 0
|
|
|| scroller.state == 'paused'){
|
|
ignoring = true
|
|
return
|
|
} else {
|
|
ignoring = false
|
|
}
|
|
if(event.touches != null){
|
|
touch = true
|
|
}
|
|
cancelThreshold = options.scrollCancelThreshold
|
|
touches = touch ? event.touches.length : 1
|
|
// if we are already touching then just skip on this...
|
|
// XXX test this...
|
|
if(touches > 1){
|
|
return false
|
|
}
|
|
prev_t = event.timeStamp || Date.now();
|
|
start_t = prev_t
|
|
/*
|
|
if(options.autoCancelEvents){
|
|
bounds = {
|
|
left: options.eventBounds,
|
|
right: root.width() - options.eventBounds,
|
|
top: options.eventBounds,
|
|
bottom: root.height() - options.eventBounds
|
|
}
|
|
}
|
|
*/
|
|
//togglePageDragging('on')
|
|
scrolled = $(root.children()[0])
|
|
setTransitionDuration(scrolled, 0)
|
|
// XXX these two are redundant...
|
|
scrolling = true
|
|
scroller.state = 'scrolling'
|
|
options.enabelStartEvent && root.trigger('userScrollStart')
|
|
// XXX do we need to pass something to this?
|
|
options.preCallback && options.preCallback()
|
|
|
|
shift = getElementShift(scrolled)
|
|
scale = getElementScale(scrolled)
|
|
// get the user coords...
|
|
prev_x = touch ? event.touches[0].pageX : evt.clientX
|
|
start_x = prev_x
|
|
prev_y = touch ? event.touches[0].pageY : evt.clientY
|
|
start_y = prev_y
|
|
|
|
return false
|
|
}
|
|
|
|
// XXX try and make this adaptive to stay ahead of the lags...
|
|
// NOTE: this does not support limiting the scroll, might be done in
|
|
// the future though.
|
|
// The way to go about this is to track scrolled size in the
|
|
// callback...
|
|
function moveHandler(evt){
|
|
if(ignoring){
|
|
return
|
|
}
|
|
var options = scroller.options
|
|
evt.preventDefault()
|
|
t = event.timeStamp || Date.now();
|
|
// get the user coords...
|
|
x = touch ? event.touches[0].pageX : evt.clientX
|
|
y = touch ? event.touches[0].pageY : evt.clientY
|
|
touches = touch ? event.touches.length : 1
|
|
|
|
/*
|
|
// XXX needs testing...
|
|
// XXX do we need to account for scrollDisabled here???
|
|
// check scroll bounds...
|
|
if(bounds != null){
|
|
if(options.hScroll && (x <= bounds.left || x >= bounds.right)
|
|
|| options.vScroll && (y <= bounds.top || y >= bounds.bottom)){
|
|
// XXX cancel the touch event and trigger the end handler...
|
|
return endMoveHandler(evt)
|
|
}
|
|
}
|
|
*/
|
|
|
|
// do the actual scroll...
|
|
if(!options.scrollDisabled && scrolling){
|
|
if(options.hScroll){
|
|
shift.left += x - prev_x
|
|
}
|
|
if(options.vScroll){
|
|
shift.top += y - prev_y
|
|
}
|
|
setElementTransform(scrolled, shift, scale)
|
|
|
|
// XXX these should be done every time the event is caught or
|
|
// just while scrolling?
|
|
dx = x - prev_x
|
|
dy = y - prev_y
|
|
max_dx += Math.abs(dx)
|
|
max_dy += Math.abs(dy)
|
|
dt = t - prev_t
|
|
prev_x = x
|
|
prev_y = y
|
|
prev_t = t
|
|
|
|
options.enableUserScrollEvent && root.trigger('userScroll')
|
|
}
|
|
return false
|
|
}
|
|
|
|
function endMoveHandler(evt){
|
|
t = event.timeStamp || Date.now();
|
|
touches = touch ? event.touches.length : 0
|
|
if(ignoring){
|
|
if(touches == 0){
|
|
ignoring = false
|
|
}
|
|
return
|
|
}
|
|
var options = scroller.options
|
|
|
|
// XXX get real transition duration...
|
|
scroller.resetTransitions()
|
|
|
|
x = touch ? event.changedTouches[0].pageX : evt.clientX
|
|
y = touch ? event.changedTouches[0].pageY : evt.clientY
|
|
// check if we are canceling...
|
|
if(cancelThreshold
|
|
&& Math.abs(start_x-x) < cancelThreshold
|
|
&& Math.abs(start_y-y) < cancelThreshold
|
|
&& (max_dx > cancelThreshold
|
|
|| max_dy > cancelThreshold)){
|
|
scroller.state = 'canceling'
|
|
}
|
|
|
|
var data = {
|
|
orig_event: evt,
|
|
scroller: scroller,
|
|
speed: {
|
|
x: dx/dt,
|
|
y: dy/dt
|
|
},
|
|
distance: {
|
|
x: start_x-x,
|
|
y: start_y-y
|
|
},
|
|
duration: t-start_t,
|
|
// current touches...
|
|
touches: touches,
|
|
clicks: null,
|
|
}
|
|
// XXX stop only if no fingers are touching or let the callback decide...
|
|
//togglePageDragging('off')
|
|
// XXX update this with the new data model!!! (see below)
|
|
options.enableEndEvent && root.trigger('userScrollEnd', data)
|
|
if(options.postCallback
|
|
// XXX revise this....
|
|
&& options.postCallback(data) === false
|
|
|| touches == 0){
|
|
// cleanup and stop...
|
|
touch = false
|
|
scrolling = false
|
|
scroller.state = 'waiting'
|
|
scrolled = null
|
|
//bounds = null
|
|
max_dx = 0
|
|
max_dy = 0
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
|
|
var scroller = {
|
|
options: {
|
|
// if one of these is false, it will restrict scrolling in
|
|
// that direction. hScroll for horizontal and vScroll for
|
|
// vertical.
|
|
// NOTE: to disable scroll completely use scrollDisabled, see
|
|
// below for details.
|
|
hScroll: true,
|
|
vScroll: true,
|
|
|
|
// this will disable scroll.
|
|
// NOTE: this is the same as setting both vScroll and hScroll
|
|
// to false, but can be set and reset without affecting
|
|
// the actual settings individually...
|
|
// NOTE: this takes priority over hScroll/vScroll.
|
|
scrollDisabled: false,
|
|
|
|
// sets the default transition settings while not scrolling...
|
|
transitionDuration: 200,
|
|
transitionEasing: 'ease',
|
|
|
|
// items to be ignored by the scroller...
|
|
// this is a jQuery compatible selector.
|
|
ignoreElements: '.noScroll',
|
|
// this is the side of the rectangle in px, if the user moves
|
|
// out of it, and then returns back, the action will get cancelled.
|
|
// i.e. the callback will get called with the "cancelling" state.
|
|
scrollCancelThreshold: 100,
|
|
|
|
// these control weather in-scroll events will get triggered.
|
|
// NOTE: these may impact performance, especially the scroll
|
|
// event, thus they need to enabled explicitly.
|
|
enabelStartEvent: false,
|
|
enableUserScrollEvent: false,
|
|
enableEndEvent: false,
|
|
|
|
/*
|
|
// XXX padding within the target element moving out of which
|
|
// will cancell the action...
|
|
// XXX needs testing...
|
|
autoCancelEvents: false,
|
|
eventBounds: 5,
|
|
*/
|
|
|
|
// callback to be called when the user first touches the screen...
|
|
preCallback: null,
|
|
// callback to be called when the user lifts a finger/mouse.
|
|
// NOTE: this may happen before the scroll is done, for instance
|
|
// when one of several fingers participating in the action
|
|
// gets lifted.
|
|
// NOTE: if this returns false explicitly, this will stop scrolling.
|
|
postCallback: postScrollCallback,
|
|
|
|
// These are used by the default callback...
|
|
// if true then doubleClick and multiClick events will get
|
|
// triggered.
|
|
// NOTE: this will introduce a lag needed to wait for next
|
|
// clicks in a group.
|
|
// NOTE: when this is false, shortClick is triggered for every
|
|
// single click separately.
|
|
enableMultiClicks: false,
|
|
// NOTE: if these are null, respective values from the env will
|
|
// be used.
|
|
clickThreshold: null,
|
|
longClickThreshold: null,
|
|
multiClickTimeout: null,
|
|
multitouchTimeout: null,
|
|
},
|
|
// NOTE: this is updated live but not used by the system in any way...
|
|
state: 'stopped',
|
|
root: root,
|
|
|
|
start: function(){
|
|
if(this.state == 'paused'){
|
|
this.state = 'waiting'
|
|
} else {
|
|
this.state = 'waiting'
|
|
// XXX STUB: this makes starting the scroll a bit sluggish,
|
|
// find a faster way...
|
|
//togglePageDragging('on')
|
|
|
|
// NOTE: if we bind both touch and mouse events, on touch devices they
|
|
// might start interfering with each other...
|
|
if('ontouchmove' in window){
|
|
root
|
|
.on('touchstart', startMoveHandler)
|
|
.on('touchmove', moveHandler)
|
|
.on('touchend', endMoveHandler)
|
|
.on('touchcancel', endMoveHandler)
|
|
} else {
|
|
root
|
|
.on('mousedown', startMoveHandler)
|
|
.on('mousemove', moveHandler)
|
|
.on('mouseup', endMoveHandler)
|
|
}
|
|
}
|
|
return this
|
|
},
|
|
// XXX test...
|
|
pause: function(){
|
|
this.state = 'paused'
|
|
return this
|
|
},
|
|
stop: function(){
|
|
if('ontouchmove' in window){
|
|
root
|
|
.off('touchstart', startMoveHandler)
|
|
.off('touchmove', moveHandler)
|
|
.off('touchend', endMoveHandler)
|
|
} else {
|
|
root
|
|
.off('mousedown', startMoveHandler)
|
|
.off('mousemove', moveHandler)
|
|
.off('mouseup', endMoveHandler)
|
|
}
|
|
this.state = 'stopped'
|
|
return this
|
|
},
|
|
resetTransitions: function(){
|
|
var scrolled = this.root.children().first()
|
|
setTransitionDuration(scrolled, this.options.transitionDuration)
|
|
setTransitionEasing(scrolled, this.options.transitionEasing)
|
|
}
|
|
}
|
|
|
|
// merge the config with the defaults...
|
|
if(config != null){
|
|
$.extend(scroller.options, config)
|
|
}
|
|
|
|
return scroller
|
|
}
|
|
|
|
// default callback...
|
|
// This will provide support for the folowing events on the scroll root
|
|
// element:
|
|
// - scrollCancelled
|
|
//
|
|
// - shortClick
|
|
// - doubleClick
|
|
// - multiClick
|
|
// this will store the number of clicks in data.clicks
|
|
// - longClick
|
|
//
|
|
// - swipeLeft
|
|
// - swipeRight
|
|
// - swipeUp
|
|
// - swipeDown
|
|
//
|
|
// - screenReleased
|
|
//
|
|
// NOTE: data.touches passed to the event is the number of touches
|
|
// released within the multitouchTimeout.
|
|
// this differs from what postScrollCallback actually gets in the
|
|
// same field when it recieves the object.
|
|
// XXX add generic snap
|
|
// XXX add generic innertial scroll
|
|
// XXX test multiple touches...
|
|
function postScrollCallback(data){
|
|
var scroller = data.scroller
|
|
var options = scroller.options
|
|
var root = scroller.root
|
|
var clickThreshold = options.clickThreshold || CLICK_THRESHOLD
|
|
var longClickThreshold = options.longClickThreshold || LONG_CLICK_THRESHOLD
|
|
var multitouchTimeout = options.multitouchTimeout || MULTITOUCH_RELEASE_THRESHOLD
|
|
var enableMultiClicks = options.enableMultiClicks
|
|
var multiClickTimeout = options.multiClickTimeout || MULTI_CLICK_TIMEOUT
|
|
|
|
var now = Date.now();
|
|
|
|
// cancel event...
|
|
if(scroller.state == 'canceling'){
|
|
return root.trigger('scrollCancelled', data)
|
|
}
|
|
|
|
// handle multiple touches...
|
|
if(data.touches > 0){
|
|
var then = scroller._last_touch_release
|
|
if(then == null || now - then < multitouchTimeout){
|
|
if(scroller._touches == null){
|
|
scroller._touches = 1
|
|
} else {
|
|
scroller._touches += 1
|
|
}
|
|
} else {
|
|
scroller._touches = null
|
|
}
|
|
// wait for the next touch release...
|
|
scroller._last_touch_release = now
|
|
return
|
|
|
|
// calculate how many touches did participate...
|
|
} else {
|
|
data.touches = scroller._touches ? scroller._touches + 1 : 1
|
|
scroller._last_touch_release = null
|
|
scroller._touches = null
|
|
}
|
|
|
|
// clicks, double-clicks, multi-clicks and long-clicks...
|
|
if(Math.max(
|
|
Math.abs(data.distance.x),
|
|
Math.abs(data.distance.y)) < clickThreshold){
|
|
if(data.duration > longClickThreshold){
|
|
return root.trigger('longClick', data)
|
|
}
|
|
if(!enableMultiClicks){
|
|
return root.trigger('shortClick', data)
|
|
|
|
} else {
|
|
// count the clicks so far...
|
|
if(scroller._clicks == null){
|
|
scroller._clicks = 1
|
|
} else {
|
|
scroller._clicks += 1
|
|
}
|
|
|
|
// kill any previous waits...
|
|
if(scroller._click_timeout_id != null){
|
|
clearTimeout(scroller._click_timeout_id)
|
|
}
|
|
|
|
// wait for the next click...
|
|
scroller._click_timeout_id = setTimeout(function(){
|
|
var clicks = scroller._clicks
|
|
data.clicks = clicks
|
|
if(clicks == 1){
|
|
root.trigger('shortClick', data)
|
|
} else if(clicks == 2){
|
|
root.trigger('doubleClick', data)
|
|
} else {
|
|
root.trigger('multiClick', data)
|
|
}
|
|
scroller._clicks = null
|
|
scroller._click_timeout_id = null
|
|
}, multiClickTimeout)
|
|
|
|
return
|
|
}
|
|
}
|
|
|
|
// swipes...
|
|
// XXX might be a good idea to chain these with swipe and screenReleased
|
|
if(Math.abs(data.distance.x) > Math.abs(data.distance.y)){
|
|
if(data.distance.x <= -clickThreshold && root.data('events').swipeLeft){
|
|
return root.trigger('swipeLeft', data)
|
|
} else if(data.distance.x >= clickThreshold && root.data('events').swipeRight){
|
|
return root.trigger('swipeRight', data)
|
|
}
|
|
} else {
|
|
if(data.distance.y <= -clickThreshold && root.data('events').swipeUp){
|
|
return root.trigger('swipeUp', data)
|
|
} else if(data.distance.y >= clickThreshold && root.data('events').swipeDown){
|
|
return root.trigger('swipeDown', data)
|
|
}
|
|
}
|
|
|
|
// this is triggered of no swipes were handled...
|
|
return root.trigger('screenReleased', data)
|
|
}
|
|
|
|
|
|
|
|
/************************************************ jQuery extensions **/
|
|
|
|
jQuery.fn.reverseChildren = function(){
|
|
return $(this).each(function(_, e){
|
|
return $(e).append($(e).children().detach().get().reverse())
|
|
})
|
|
}
|
|
|
|
|
|
|
|
jQuery.fn.sortChildren = function(func){
|
|
return $(this).each(function(_, e){
|
|
return $(e).append($(e).children().detach().get().sort(func))
|
|
})
|
|
}
|
|
|
|
|
|
|
|
/**************************************************** JS utilities ***/
|
|
|
|
String.prototype.capitalize = function(){
|
|
return this[0].toUpperCase() + this.slice(1)
|
|
}
|
|
|
|
|
|
var getAnimationFrame = (window.requestAnimationFrame
|
|
|| window.webkitRequestAnimationFrame
|
|
|| window.mozRequestAnimationFrame
|
|
|| window.oRequestAnimationFrame
|
|
|| window.msRequestAnimationFrame
|
|
|| function(callback){
|
|
window.setTimeout(callback, 1000 / 60)
|
|
})
|
|
|
|
var cancelAnimationFrame = (window.cancelRequestAnimationFrame
|
|
|| window.webkitCancelAnimationFrame
|
|
|| window.webkitCancelRequestAnimationFrame
|
|
|| window.mozCancelRequestAnimationFrame
|
|
|| window.oCancelRequestAnimationFrame
|
|
|| window.msCancelRequestAnimationFrame
|
|
|| clearTimeout)
|
|
|
|
|
|
|
|
|
|
|
|
/********************************************************** logger ***/
|
|
|
|
function Logger(){
|
|
_log = null
|
|
return {
|
|
setup: function(){
|
|
if(_log == null){
|
|
_log = $('<div id="log"></div>')
|
|
.css({
|
|
position: 'fixed',
|
|
background: 'silver',
|
|
opacity: 0.5,
|
|
width: 200,
|
|
height: '80%',
|
|
top: 10,
|
|
left: 10,
|
|
'z-index': 90000,
|
|
overflow: 'hidden',
|
|
padding: 10,
|
|
})
|
|
.text('log')
|
|
.appendTo($('body'))
|
|
} else {
|
|
_log.appendTo($('body'))
|
|
}
|
|
return this
|
|
},
|
|
remove: function(){
|
|
_log.detach()
|
|
return this
|
|
},
|
|
log: function(text){
|
|
_log.html(_log.html() + '<br>' + text + '')
|
|
_log.scrollTop(_log.prop('scrollHeight'))
|
|
return this
|
|
},
|
|
clear: function(){
|
|
_log.html('')
|
|
return this
|
|
},
|
|
get: function(){
|
|
return _log
|
|
},
|
|
set: function(elem){
|
|
_log = elem
|
|
}
|
|
}.setup()
|
|
}
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* vim:set ts=4 sw=4 : */
|