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neft

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Neft-io/neft

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'use strict' utils = require 'src/utils' assert = require 'src/assert' module.exports = (impl) -> {Types} = impl {now} = Date {round} = Math pending = [] nowTime = now() vsync = -> nowTime = now() i = 0; n = pending.length while i < n anim = pending[i] if anim._running and not anim._paused updateAnimation anim i++ else # remove element in not ordered list # this array may change due loop pending[i] = pending[n-1] pending[n-1] = pending[pending.length-1] pending.pop() anim._impl.pending = false n-- requestAnimationFrame vsync return requestAnimationFrame? vsync updateAnimation = (anim) -> data = anim._impl progress = (nowTime - data.startTime) / anim._duration if progress < 0 data.progress = 0 return else if progress > 1 progress = 1 data.progress = progress running = progress isnt 1 or (anim._running and anim._loop and anim._when) if progress is 1 val = data.to else val = data.easing anim._duration * progress, data.from, (data.to - data.from), anim._duration target = anim._target if val is val and target and (property = anim._property) # isNaN hack if not running or anim._updateProperty or not data.propertySetter anim._updatePending = true target[property] = val anim._updatePending = false # force impl update, because setter won't update if nothing change in data if progress is 1 and data.propertySetter and target[property] is val impl[data.propertySetter].call target, val else impl[data.propertySetter].call target, val if anim._updateData target[data.internalPropertyName] = val if progress is 1 if running data.startTime += anim._loopDelay + anim._duration else data.startTime = 0 anim.running = false return DATA = type: 'number' pending: false startTime: 0 pauseTime: 0 from: 0 to: 0 DATA: DATA createData: impl.utils.createDataCloner 'PropertyAnimation', DATA create: (data) -> impl.Types.PropertyAnimation.create.call @, data startAnimation: do (_super = impl.startAnimation) -> -> _super.call @ if @_impl.type is 'number' data = @_impl data.from = @_from data.to = @_to unless data.pending pending.push @ data.pending = true data.startTime = nowTime updateAnimation @ data.startTime += @_startDelay return stopAnimation: do (_super = impl.stopAnimation) -> -> _super.call @ data = @_impl if data.type is 'number' and data.startTime isnt 0 data.startTime = 0 updateAnimation @ return resumeAnimation: do (_super = impl.resumeAnimation) -> -> _super.call @ if @_impl.type is 'number' data = @_impl unless data.pending pending.push @ data.pending = true data.startTime += Date.now() - data.pauseTime data.pauseTime = 0 return pauseAnimation: do (_super = impl.pauseAnimation) -> -> _super.call @ data = @_impl if data.type is 'number' data.pauseTime = Date.now() return