~singpolyma/post-part: Home.purs - sourcehut git


                                                                                
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-- Full source may be found at: https://git.singpolyma.net/post-part
-- Copyright 2020 Stephen Paul Weber <singpolyma.net>
--
-- Permission to use, copy, modify, and/or distribute this software for any
-- purpose with or without fee is hereby granted, provided that the above
-- copyright notice and this permission notice appear in all copies.
--
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
-- RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
-- CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

module Home where

import Prelude
import Effect
import Effect.Class
import Data.Maybe
import Data.Either
import Data.Array
import Debug.Trace
import Data.Traversable
import Math as Math
import Data.Tuple (Tuple(..))
import Data.Int as Int
import Effect.Timer as Timer
import Effect.Ref as Ref
import Effect.Aff (Aff, Canceler(..), makeAff, launchAff_)
import Web.DOM.ParentNode (querySelector, querySelectorAll, QuerySelector(..), ParentNode)
import Web.DOM.Document as DOMDocument
import Web.HTML.HTMLDocument as HTMLDocument
import Web.HTML.HTMLElement as HTMLElement
import Web.HTML.HTMLMediaElement as HTMLMediaElement
import Web.HTML (window, HTMLElement, HTMLMediaElement)
import Web.HTML.Event.EventTypes (load)
import Web.UIEvent.MouseEvent as MouseEvent
import Web.UIEvent.MouseEvent.EventTypes (mousemove, mouseout, click)
import Web.HTML.Window as Window
import Web.DOM.Element as Element
import Web.DOM.NodeList as NodeList
import Web.DOM.DOMTokenList as DOMTokenList
import Web.Event.EventTarget (addEventListener, eventListener)
import Partial.Unsafe (unsafePartial)
import Web.CSSOM.ElementCSSInlineStyle as Style
import Web.CSSOM.CSSStyleDeclaration as Style

data TickTock = Tick | Tock

tick Tick = Tock
tick Tock = Tick

main = unsafePartial $ do
  win <- window
  doc <- HTMLDocument.toParentNode <$> Window.document win
  tickTockRef <- Ref.new Tick
  Timer.setInterval 7500 $ do
    Just slideshow <- (HTMLElement.fromElement =<< _) <$>
      querySelector (QuerySelector "#slideshow img") doc
    slideshowStyle <- Style.style (Style.fromHTMLElement slideshow)
    tickTock <- Ref.modify tick tickTockRef
    case tickTock of
      Tick -> Style.setProperty slideshowStyle "opacity" "0"
      Tock -> Style.setProperty slideshowStyle "opacity" "1"