vendor/javascripts/prez-controller.js.coffee in prez-0.0.2 vs vendor/javascripts/prez-controller.js.coffee in prez-0.0.3

@@ -1,8 +1,15 @@
+$.setTimeout = (t, fn) -> setTimeout fn, t
+$.setInterval = (t, fn) -> setInterval fn, t
+
+$.fn.slideDuration = ->
+    parseInt(@data("duration") || "0", 10)
+
 class Prez
     DEFAULT_OPTIONS =
         useHash: true
+        duration: 0
 
     constructor: (options) ->
         @options = $.extend {}, DEFAULT_OPTIONS, options
         @window = options.window
         @document = @window.document
@@ -20,19 +27,32 @@
                 true
             else
                 false
 
         $(".prez-slide", @document).each (i) -> $(@).attr "data-slide", "#{i + 1}"
+        @startTime = Date.now()
         @changeSlideTo 1 unless changeToHashSlide()
         $(@window).on "hashchange", changeToHashSlide
         $(@document).on "keydown", Prez.handlers.keyDown
 
     changeSlideTo: (nextValue) ->
         $next = $ ".prez-slide[data-slide='#{nextValue}']", @document
         return false if $next.size() == 0
         $(".prez-slide", @document).hide()
         $next.show()
+        @slideStartTime = Date.now()
+        @slideDuration = $next.slideDuration()
+
+        # When unspecified, the slide duration is an even amount based
+        # on the remaining slides that don't have a specific duration
+        if @slideDuration <= 0
+            $remainingUntimed = $next.nextAll(".prez-slide").filter -> $(@).slideDuration() <= 0
+            @slideDuration = @remainingPresentationSeconds() / ($remainingUntimed.size() + 1)
+
+            if @slideDuration < 0
+                @slideDuration = 0
+
         @options.slideChanged? $next, nextValue
         true
 
     changeSlideBy: (amount) ->
         current = parseInt $(".prez-slide:visible", @document).data("slide"), 10
@@ -43,10 +63,59 @@
 
     nextSlide: -> @changeSlideBy 1
     prevSlide: -> @changeSlideBy -1
     end: -> @window.close()
 
+    remainingPresentationSeconds: ->
+        Math.floor(@options.duration - ((Date.now() - @startTime) / 1000))
+
+    remainingPresentationTime: ->
+        Prez.secondsToTime @remainingPresentationSeconds(), Prez.timeLevels(@options.duration)
+
+    remainingSlideSeconds: ->
+        Math.floor(@slideDuration - ((Date.now() - @slideStartTime) / 1000))
+
+    remainingSlideTime: ->
+        Prez.secondsToTime @remainingSlideSeconds(), Prez.timeLevels(@slideDuration)
+
+    @timeLevels: (s) ->
+        if s >= (60 * 60)
+            3
+        else if s >= 60
+            2
+        else
+            1
+
+    @timeToSeconds: (t) ->
+        values = t.split ":"
+        result = parseInt(values.pop() || "0", 10)
+        result += parseInt(values.pop() || "0", 10) * 60
+        result += parseInt(values.pop() || "0", 10) * 60 * 60
+        result
+
+    @secondsToTime: (s, minLevels = 1) ->
+        pad = (n, size) ->
+            result = "#{n}"
+
+            while result.length < size
+                result = "0#{result}"
+
+            result
+
+        s = Math.floor s
+        s = Math.abs s
+        seconds = s % 60
+        minutes = Math.floor(s / 60) % 60
+        hours = Math.floor(s / 60 / 60)
+
+        if hours > 0 || minLevels >= 3
+            "#{hours}:#{pad minutes, 2}:#{pad seconds, 2}"
+        else if minutes > 0 || minLevels == 2
+            "#{minutes}:#{pad seconds, 2}"
+        else
+            "#{seconds}"
+
     KEY_ENTER = 13
     KEY_SPACE = 32
     KEY_LEFT = 37
     KEY_RIGHT = 39
 
@@ -60,23 +129,41 @@
                     Prez.current?.prevSlide()
                 when KEY_ENTER, KEY_SPACE, KEY_RIGHT
                     e.preventDefault()
                     Prez.current?.nextSlide()
 
+        timeChange: ->
+            return unless Prez.current
+            $(".prez-total-duration").text Prez.current.remainingPresentationTime()
+            seconds = Prez.current.remainingPresentationSeconds()
+            $(".prez-total-duration").toggleClass("prez-danger-time", seconds <= 60 && seconds >= 0)
+            $(".prez-total-duration").toggleClass("prez-over-time", seconds < 0)
+            $(".prez-current-slide-duration").text Prez.current.remainingSlideTime()
+            seconds = Prez.current.remainingSlideSeconds()
+            $(".prez-current-slide-duration").toggleClass("prez-danger-time", seconds <= 3 && seconds >= 0)
+            $(".prez-current-slide-duration").toggleClass("prez-over-time", seconds < 0)
+
+            if Math.floor(Date.now() / 250) % 2 == 0
+                $(".prez-danger-time").hide()
+            else
+                $(".prez-danger-time").show()
+
+            # Ensure transitions stay shown
+            $(".prez-total-duration:not(.prez-danger-time)").show()
+            $(".prez-current-slide-duration:not(.prez-danger-time)").show()
+
 $(document).on "click", "#new-window", (e) ->
     return if Prez.current
 
-    callback = =>
+    $.setTimeout 1, =>
         if $(this).is(".active")
             $("#new-window #launch-message").text "Launch in new window"
             $("#new-window .glyphicon").addClass("glyphicon-new-window").removeClass("glyphicon-unchecked")
         else
             $("#new-window #launch-message").text "Launch in this window"
             $("#new-window .glyphicon").removeClass("glyphicon-new-window").addClass("glyphicon-unchecked")
 
-    setTimeout callback, 1
-
 $(document).on "click", "#launch", (e) ->
     e.preventDefault()
     return if Prez.current
 
     unless $("#new-window").is(".active")
@@ -95,17 +182,20 @@
     iframePrez = new Prez
         window: iframe
         useHash: false
 
     Prez.current = new Prez
+        duration: Prez.timeToSeconds($("#prez-duration").val())
         window: window.open("", "prez", "width=640,height=480")
         slideChanged: ($slide, slideNumber) ->
             notes = $slide.find(".prez-notes").html() || ""
             $("#slide-notes").html notes
             $(".current-slide-number").text $slide.data("slide")
+            Prez.handlers.timeChange()
             iframePrez.changeSlideTo slideNumber
 
+    $(".total-slides").text $(".prez-slide", Prez.current.document).size()
     $("#pre-launch").hide()
     $("#post-launch").show()
 
     $(Prez.current.window).bind "beforeunload", ->
         $("#post-launch").hide()
@@ -124,8 +214,9 @@
 $(document).on "click", ".end-prez", (e) ->
     e.preventDefault()
     Prez.current?.end()
 
 $(document).on "keydown", Prez.handlers.keyDown
+$.setInterval 50, Prez.handlers.timeChange
 
 $ ->
     $("#in-window-not-implemented-modal").modal show: false