mirror of
https://github.com/flynx/PortableMag.git
synced 2025-10-31 12:00:11 +00:00
the scroller framework almost generic, lots of minor tweeks...
Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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@ -114,18 +114,22 @@ $(document).ready(function(){
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window.THRESHOLD = 10
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var scroller = makeScrollHandler($('.viewer'), function(speed, distance){
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// XXX this is not too correct...
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// ...make this mode specific...
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if(getMagazineScale() >= 1){
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var cur = $('.current.page')
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if(distance > THRESHOLD){
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return nextPage(cur)
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} else if(distance < -THRESHOLD){
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return prevPage(cur)
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window.MagazineScroller = makeScrollHandler($('.viewer'), {
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hScroll: true,
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vScroll: false,
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callback: function(speed, distance){
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// XXX this is not too correct...
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// ...make this mode specific...
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if(getMagazineScale() >= 1){
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var cur = $('.current.page')
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if(distance > THRESHOLD){
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return nextPage(cur)
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} else if(distance < -THRESHOLD){
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return prevPage(cur)
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}
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}
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}
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setCurrentPage()
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setCurrentPage()
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},
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}).start()
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//setMagazineScale(0.5)
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93
layout.js
93
layout.js
@ -44,6 +44,7 @@ var togglePageView = createCSSClassToggler(
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// XXX this is not correct...
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// ...need to fit one rectangel (page) into another (viewer)
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// ...use the implementation in magazine.js
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if(W >= H){
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// fit to width...
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var scale = W/w
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@ -80,13 +81,16 @@ var togglePageView = createCSSClassToggler(
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// XXX should we use a callback or an event???
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// XXX make this get the scrolled item automatically...
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// ...now $('.magazine') is hardcoded...
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function makeScrollHandler(root, callback){
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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 scrolled
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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 start
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var start_x
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var start_y
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var prev_x
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var prev_y
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var prev_t
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@ -97,41 +101,35 @@ function makeScrollHandler(root, callback){
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var y
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var t
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var dx
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var dy
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var dt
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// XXX at this point this is not used...
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var config = {
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hScroll: true,
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vScroll: false,
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enableEvents: false,
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autoCancelEvents: false,
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eventBounds: 5,
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}
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function startMoveHandler(evt, callback){
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prev_t = event.timeStamp || Date.now();
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if(config.autoCancelEvents){
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if(scroller.options.autoCancelEvents){
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bounds = {
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left: config.eventBounds,
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right: root.width() - config.eventBounds,
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top: config.eventBounds,
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bottom: root.height() - config.eventBounds
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left: scroller.options.eventBounds,
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right: root.width() - scroller.options.eventBounds,
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top: scroller.options.eventBounds,
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bottom: root.height() - scroller.options.eventBounds
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}
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}
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setTransitionDuration($('.magazine'), 0)
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scrolled = $(root.children()[0])
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setTransitionDuration(scrolled, 0)
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if(event.touches != null){
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touch = true
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}
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scrolling = true
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scroller.state = 'scrolling'
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//root.trigger('userScrollStart')
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scroller.options.enabelStartEvent && root.trigger('userScrollStart')
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//togglePageDragging('on')
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shift = getMagazineShift()
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scale = getMagazineScale()
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shift = getElementShift(scrolled)
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scale = getElementScale(scrolled)
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// get the user coords...
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prev_x = touch ? event.touches[0].pageX : evt.clientX
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start = prev_x
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start_x = prev_x
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prev_y = touch ? event.touches[0].pageY : evt.clientY
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start_y = prev_y
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return false
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}
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@ -143,13 +141,14 @@ function makeScrollHandler(root, callback){
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t = event.timeStamp || Date.now();
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// get the user coords...
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x = touch ? event.touches[0].pageX : evt.clientX
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y = touch ? event.touches[0].pageY : evt.clientY
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touches = touch ? event.touches.length : 0
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// XXX needs testing...
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// check scroll bounds...
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if(bounds != null){
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if(config.hScroll && (x <= bounds.left || x >= bounds.right)
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|| config.vScroll && (y <= bounds.top || y >= bounds.bottom)){
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if(scroller.options.hScroll && (x <= bounds.left || x >= bounds.right)
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|| scroller.options.vScroll && (y <= bounds.top || y >= bounds.bottom)){
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// XXX cancel the touch event and trigger the end handler...
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return endMoveHandler(evt)
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}
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@ -157,17 +156,24 @@ function makeScrollHandler(root, callback){
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// do the actual scroll...
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if(scrolling){
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shift += x - prev_x
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setElementTransform($('.magazine'), shift, scale)
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if(scroller.options.hScroll){
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shift.left += x - prev_x
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}
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if(scroller.options.vScroll){
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shift.top += y - prev_y
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}
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setElementTransform(scrolled, shift, scale)
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// XXX these should be done every time the event is caught or
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// just while scrolling?
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dx = x - prev_x
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dy = y - prev_y
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dt = t - prev_t
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prev_t = t
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prev_x = x
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prev_y = y
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prev_t = t
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//root.trigger('userScroll')
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scroller.options.enableUserScrollEvent && root.trigger('userScroll')
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}
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return false
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}
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@ -175,20 +181,34 @@ function makeScrollHandler(root, callback){
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// XXX get real transition duration...
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setTransitionDuration($('.magazine'), 200)
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x = touch ? event.changedTouches[0].pageX : evt.clientX
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y = touch ? event.changedTouches[0].pageY : evt.clientY
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touch = false
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scrolling = false
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scroller.state = 'waiting'
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touches = 0
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bounds = null
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//togglePageDragging('off')
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// XXX add speed to this...
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//root.trigger('userScrollEnd')
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callback && callback(dx/dt, start - x)
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scroller.options.enableEndEvent && root.trigger('userScrollEnd', dx, dy, dt, start_x, start_y)
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scroller.options.callback && scroller.options.callback(dx/dt, start_x-x)
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return false
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}
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var scroller = {
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options: {
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hScroll: true,
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vScroll: true,
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enabelStartEvent: false,
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enableUserScrollEvent: false,
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enableEndEvent: false,
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autoCancelEvents: false,
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eventBounds: 5,
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callback: null
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},
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start: function(){
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this.state = 'waiting'
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// XXX STUB: this makes starting the scroll a bit sluggish,
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@ -233,6 +253,12 @@ function makeScrollHandler(root, callback){
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// NOTE: this is updated live but not used by the system in any way...
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state: 'stopped'
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}
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// merge the config with the defaults...
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if(config != null){
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$.extend(scroller.options, config)
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}
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return scroller
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}
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@ -274,15 +300,18 @@ function getMagazineOffset(page, scale, align){
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var offset = $('.viewer').width()/2 - (page.width()/2)*scale
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}
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// NOTE: this without scaling also represents the inner width of
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// the viewer...
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var w = mag.outerWidth(true)
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// XXX this depends on scale...
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var pos = page.position().left//*scale
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var l = 0
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return -((w - w*scale)/2 + pos) + offset
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}
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// XXX make this work for narrow and left/right alligned pages...
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function getPageNumber(page){
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// a page is given explicitly, get the next one...
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if(page != null){
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31
lib/jli.js
31
lib/jli.js
@ -196,14 +196,27 @@ function unanimated(obj, func, time){
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// NOTE: at this point this works only on the X axis...
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function setElementTransform(elem, offset, scale){
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elem = $(elem)
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if(offset == null){
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var offset = getElementShift(elem).left
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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('+ offset +'px, 0px) scale('+ scale +') translateZ(0px)'
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var transform = 'translate('+ offset.left +'px, '+ offset.top +'px) scale('+ scale +') translateZ(0px)'
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elem.css({
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'-ms-transform' : transform,
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'-webkit-transform' : transform,
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@ -212,14 +225,17 @@ function setElementTransform(elem, offset, scale){
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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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left: 0,
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// XXX is this correct???
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top: ''
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})
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} else {
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var transform = 'translate(0px, 0px) scale('+ scale +') translateZ(0px)'
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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: offset,
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left: offset.left,
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top: offset.top,
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// XXX can we avoid this here??
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'-ms-transform' : transform,
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@ -284,15 +300,16 @@ function getElementShift(elem){
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if(!transform || transform == 'none'){
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return {left: 0, top: 0}
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}
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res = /(translate\(|matrix\([^,]*,[^,]*,[^,]*,[^,]*,)([^,]*),([^\)]*)\)/.exec(transform)
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return {
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left: parseFloat(/(translate\(|matrix\([^,]*,[^,]*,[^,]*,[^,]*,)([^,]*),/.exec(transform)[2]),
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top: null
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left: parseFloat(res[2]),
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top: parseFloat(res[3])
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}
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// using left...
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} else {
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return {
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left: elem.position().left,
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top: null
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top: elem.position().top
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}
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}
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}
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