From a1eec24f176f9f6609c1f5db22d1bd7350bfc011 Mon Sep 17 00:00:00 2001
From: j <j@mailb.org>
Date: Fri, 2 Sep 2022 13:54:53 +0200
Subject: [PATCH] first pass at pandora-scroll element

---
 app/static/css/partials/_pandora_scroll.scss | 125 +++++++++++++++++
 app/static/css/style.scss                    |   1 +
 app/static/js/ascroll.js                     |  96 ++++++++++---
 app/static/js/pandora-scroll.js              | 136 +++++++++++++++++++
 app/templates/text.html                      |   1 +
 5 files changed, 337 insertions(+), 22 deletions(-)
 create mode 100644 app/static/css/partials/_pandora_scroll.scss
 create mode 100644 app/static/js/pandora-scroll.js

diff --git a/app/static/css/partials/_pandora_scroll.scss b/app/static/css/partials/_pandora_scroll.scss
new file mode 100644
index 0000000..84023bc
--- /dev/null
+++ b/app/static/css/partials/_pandora_scroll.scss
@@ -0,0 +1,125 @@
+.pandora-scroll.player {
+  iframe {
+    width: 100%;
+    min-height: calc(100vh - 64px);
+  }
+}
+.pandora-scroll {
+  font-family: "noto_sans";
+  width: 100%;
+  color: #ddd;
+  a {
+    color: var(--color-link);
+    text-decoration: none;
+  }
+
+  h1 {
+    padding-left: var(--spacing-2);
+    padding-right: var(--spacing-2);
+    padding-top: 32px;
+    font-size: 20px;
+    letter-spacing: 1px;
+    font-weight: bold;
+    max-width: var(--container-width);
+    margin: auto;
+  }
+  h2 {
+    padding: 4px var(--spacing-2);
+    max-width: var(--container-width);
+    margin: auto;
+  }
+  .intro {
+    padding: 4px var(--spacing-2) 64px;
+    max-width: var(--container-width);
+    margin: auto;
+  }
+  .vbox {
+    max-width: var(--container-width);
+    margin: auto;
+    background: red;
+  }
+  .player {
+    position: absolute;
+    display: none;
+    width: 100%;
+    height: auto;
+    max-width: var(--container-width);
+    max-height: 88vh;
+    margin: auto;
+    //transition: opacity 0.4s;
+
+  }
+  .annotation {
+    //min-height: 100vh;
+    .frame {
+      max-width: var(--container-width);
+      margin: auto;
+      figure {
+        text-align: center;
+      }
+      img {
+        width: 100%;
+        height: auto;
+        max-height: 88vh;
+        margin: auto;
+        object-fit: contain;
+      }
+      figcaption {
+        text-align: right;
+        padding-right: 4px;
+        font-size: 14px;
+      }
+    }
+    .text {
+      max-width: var(--container-width);
+      margin: auto;
+      padding: 20px 20px;
+      font-size: 20px;
+      line-height: 24px;
+
+      a {
+        word-wrap: anywhere;
+      }
+
+      figure {
+        width: 100%;
+        text-align: center;
+      }
+
+      img {
+        margin: auto;
+        max-width: 100%;
+      }
+    }
+  }
+
+  .annotation-icon-wrapper {
+    border: 3px solid rgba(#fff, 0.8);
+    border-radius: 50%;
+    background: var(--gradient-body);
+    background-size: 300% 100%;
+    width: 52px;
+    height: 52px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    animation: background_animation 30s ease-in-out infinite;
+    opacity: 0.9;
+
+    &:hover, &:focus {
+      opacity: 1;
+    }
+  }
+  
+  .annotation-icon {
+    color: rgba(#fff, 1);
+    font-size: 38px;
+  }
+
+  .related-film {
+    padding: calc(var(--spacing) * 4) var(--spacing-2);
+    max-width: var(--container-width);
+    margin: auto;
+    line-height: 1.4;
+  }
+}
diff --git a/app/static/css/style.scss b/app/static/css/style.scss
index 2daecc0..221d109 100755
--- a/app/static/css/style.scss
+++ b/app/static/css/style.scss
@@ -7,6 +7,7 @@
 @import "partials/film";
 @import "partials/text";
 @import "partials/ascroll";
+@import "partials/pandora_scroll";
 @import "partials/player";
 @import "partials/about";
 @import "partials/contact";
diff --git a/app/static/js/ascroll.js b/app/static/js/ascroll.js
index b9a49f0..d67f7a1 100755
--- a/app/static/js/ascroll.js
+++ b/app/static/js/ascroll.js
@@ -29,10 +29,17 @@ function resize() {
     }
 }
 
-function updatePlayer(video, frame, currentTime, out, src) {
-    var rect = frame.getBoundingClientRect();
+function updatePlayer(video, frame, currentTime, out, src, config) {
+    var top, rect = frame.getBoundingClientRect();
     video.style.opacity = 0
-    video.style.top =  (rect.top + window.scrollY) + 'px'
+    if (config.root) {
+        var root_rect = config.root.getBoundingClientRect();
+        //console.log('rect.top', rect.top, 'window.scrollY', window.scrollY, 'root_rect.top', root_rect.top)
+        top = rect.top - root_rect.top
+    } else {
+        top = rect.top + window.scrollY
+    }
+    video.style.top = top + 'px'
     video.style.display = 'block';
     if (src) {
         setVideoSrc(video, src)
@@ -129,16 +136,22 @@ function timeupdate(event) {
 
 function formatInfo(config, ascroll) {
     var info = document.createElement('div')
-    var h1 = document.createElement('h1')
-    h1.innerHTML = config.title
-    info.appendChild(h1)
-    var h2 = document.createElement('h2')
-    h2.innerHTML = config.byline
-    info.appendChild(h2)
-    var div = document.createElement('div')
-    div.classList.add('intro')
-    div.innerHTML = config.body
-    info.appendChild(div)
+    if (config.title) {
+        var h1 = document.createElement('h1')
+        h1.innerHTML = config.title
+        info.appendChild(h1)
+    }
+    if (config.byline) {
+        var h2 = document.createElement('h2')
+        h2.innerHTML = config.byline
+        info.appendChild(h2)
+    }
+    if (config.body) {
+        var div = document.createElement('div')
+        div.classList.add('intro')
+        div.innerHTML = config.body
+        info.appendChild(div)
+    }
     ascroll.appendChild(info)
     return info
 }
@@ -170,7 +183,9 @@ function showOverlay(event) {
             overlay.innerHTML = on
     }
     overlay.addEventListener('click', event=> {
-        video.muted = !video.muted
+        const muted = video.muted
+        document.querySelectorAll('pandora-scroll').forEach(el => el.mute() )
+        video.muted = !muted
         if (video.muted) {
             overlay.innerHTML = off
         } else {
@@ -193,6 +208,7 @@ function showOverlay(event) {
 }
 
 function renderAnnotation(config, video, ascroll, clip) {
+    console.log("renderAnnotation", clip)
     var div = document.createElement('div')
     div.classList.add('annotation')
     var annotation = clip.annotations[0]
@@ -231,14 +247,15 @@ function renderAnnotation(config, video, ascroll, clip) {
             src = `${streamPrefix}/${annotation.id.split('/')[0]}/480p.webm`
         }
         if (config.loaded && visible) {
-            updatePlayer(video, frame, annotation['in'], annotation['out'], src)
+            updatePlayer(video, frame, annotation['in'], annotation['out'], src, config)
         }
 
     }))
 }
 
 function renderAnnotations(config) {
-    var ascroll = document.querySelector('#ascroll')
+    console.log('renderAnnotations', config.item, config.annotations.length)
+    var ascroll = config.root ? config.root : document.querySelector('#ascroll')
     config.loaded = false
     var video = document.createElement('video')
     video.classList.add('player')
@@ -270,14 +287,27 @@ function renderAnnotations(config) {
             if (config.edit) {
                 src = `${streamPrefix}/${config.first.id.split('/')[0]}/480p.webm`
             }
-            updatePlayer(video, frame, config.first['in'], config.first['out'], src)
+            updatePlayer(video, frame, config.first['in'], config.first['out'], src, config)
         }
     }
 }
 
+function isInside(config, annotation) {
+    if (!config['in'] && !config['out']) {
+        return true
+    }
+    if (annotation['in'] < config['out'] && annotation['out'] > config['in']) {
+        annotation['in'] = Math.min(annotation['in'], config['in'])
+        annotation['out'] = Math.min(annotation['out'], config['out'])
+        return true
+    }
+    return false
+}
+
 async function loadClips(annotations) {
     var items = annotations.map(annotation => annotation.id.split('/')[0])
     items = [...new Set(items)]
+    console.log('loadClips', annotations, items)
     return pandoraAPI('findClips', {itemsQuery: {
         conditions: [{key: 'id', operator: '&', value: items}]
     }, range: [0, 10000], keys: [
@@ -319,23 +349,45 @@ async function loadClips(annotations) {
 }
 
 function loadAnnotations(config) {
-    var layers = config.layer
+    var layers = config.layer || config.layers || []
     if (!Array.isArray(layers)) {
         layers = [layers]
     }
-    if (config.item) {
+    if (config.item && !layers.length) {
+        // load player only view
+        config.annotations = [
+            {
+                "in": config["in"],
+                "out": config["out"],
+                "id": config["item"] + "/" + config["in"].toFixed(3)  + '-'+ config.out.toFixed(3),
+                "annotations": [{
+                    "id": config["item"] + "/" + config["in"].toFixed(3)  + '-'+ config.out.toFixed(3),
+                    "value": "",
+                    "in": config["in"],
+                    "out": config["out"],
+                }],
+                "color1": "",
+                "color2": "",
+            }
+        ]
+        renderAnnotations(config)
+    } else if (config.item) {
         pandoraAPI('get', {id: config.item, keys: [
             'layers'
         ]}).then(response => {
             var annotations = []
             layers.forEach(layer => {
-                response.data.layers[layer].forEach(annotation => {
-                    if (!(config.user && annotation.user != config.user)) {
+                if (!response.data.layers[layer]) {
+                    console.log("ERROR", config.item, layer, "missing", config.root)
+                }
+                response.data.layers[layer] && response.data.layers[layer].forEach(annotation => {
+                    if (!(config.user && annotation.user != config.user) && isInside(config, annotation)) {
                         annotations.push(annotation)
                     }
                 })
             })
             loadClips(annotations).then(annotations => {
+                console.log('got', annotations)
                 config.annotations = annotations.filter(annotation => {
                     if (config.only_e) {
                         if (annotation.value.slice(0, 2) == 'E:') {
@@ -394,7 +446,7 @@ function loadAnnotations(config) {
                 config.annotations = []
             }
             renderAnnotations(config)
-        }
+       }
     }
 }
 
diff --git a/app/static/js/pandora-scroll.js b/app/static/js/pandora-scroll.js
new file mode 100644
index 0000000..8cd50fc
--- /dev/null
+++ b/app/static/js/pandora-scroll.js
@@ -0,0 +1,136 @@
+class PandoraScroll extends HTMLElement {
+  constructor() {
+    super()
+
+    if (this.attributes.src && this.attributes.src.value) {
+        const attributes = parseIframeURL(this.attributes.src.value)
+        Object.keys(attributes).forEach(key => {
+            if (key[0] != '_') {
+                this.setAttribute(key, attributes[key])
+            }
+        })
+    }
+    const shadow = this.attachShadow({mode: 'open'})
+    const link = document.createElement('link')
+    link.rel = 'stylesheet'
+    link.href = document.head.querySelector('link[rel="stylesheet"]').href
+    const style = document.createElement('style')
+    const body = document.createElement('div')
+    body.classList.add('pandora-scroll')
+    shadow.appendChild(link)
+    shadow.appendChild(style)
+    shadow.appendChild(body)
+    this.mute = function() {
+        shadow.querySelectorAll('video').forEach(video => {
+            video.muted = true
+        })
+    }
+  }
+
+
+  static get observedAttributes() { return ['muted']; }
+
+  connectedCallback() {
+    console.log('scroll connected')
+    this._loadAnnotations()
+    this._updateStyle()
+  }
+  disconnectedCallback() {
+    console.log('scroll disconnected')
+  }
+  adoptedCallback() {
+    console.log('Custom square element moved to new page.');
+  }
+
+  attributeChangedCallback(name, oldValue, newValue) {
+    console.log('value changed', name, oldValue, newValue);
+    this._updateStyle()
+  }
+  _updateStyle() {
+      const shadow = this.shadowRoot;
+      const childNodes = shadow.childNodes;
+      for (const node of childNodes) {
+        if (node.nodeName === 'STYLE') {
+          node.textContent = `
+            .pandora-scroll {
+                position: relative;
+                display: block;
+            }
+          `
+        }
+      }
+  }
+
+  _config() {
+    var config = {}
+    for (var i=0; i<this.attributes.length; i++) {
+        var a = this.attributes[i]
+        config[a.name] = a.value
+        if (a.name == 'layers') {
+            config[a.name] = a.value.split(' ')
+        } else if (['in', 'out'].indexOf(a.name) > -1) {
+            config[a.name] = parseTime(a.value)
+        } else {
+            config[a.name] = a.value
+        }
+    }
+    return config
+  }
+  _loadAnnotations() {
+        var config = this._config()
+        config.root = this.shadowRoot.querySelector('.pandora-scroll')
+        console.log(config)
+        loadAnnotations(config)
+    }
+}
+
+customElements.define("pandora-scroll", PandoraScroll);
+
+
+
+function parseTime(value) {
+    return value.split(":").map(p => parseFloat(p)).reduce((c, p) => { return c*60 + p}, 0)
+}
+
+function isInside(config, annotation) {
+    if (!config['in'] && !config['out']) {
+        return true
+    }
+    if (annotation['in'] < config['out'] && annotation['out'] > config['in']) {
+        return true
+    }
+    return false
+}
+
+function parseIframeURL(value) {
+    var config = {}
+    value = value.replace('/player/', '/')
+    value = value.replace('/editor/', '/')
+    var data = value.split('#embed?')
+    function decodeValue(value) {
+        return decodeURIComponent(value)
+            .replace(/_/g, ' ').replace(/\t/g, '_')
+            .replace(/\x0E/g, '<').replace(/\x0F/g, '>');
+    }
+    var args = data[1].replace('&amp;', '&').split('&').map(kv => {
+        kv = kv.split('=')
+        console.log(kv, decodeValue(kv[1]))
+        return [kv[0], JSON.parse(decodeValue(kv[1]))]
+    }).reduce((k, v) =>  {
+        k[v[0]]  = v[1]
+        return k
+    }, {})
+    var parts = data[0].split('/')
+    config.item = parts[3]
+    var ts = parts[4].split(',')
+    config['in'] = ts[0]
+    config['out'] = ts[1]
+    config._args = args
+    if (args.showLayers) {
+        config.layers = args.showLayers.join(' ')
+    }
+    if (args.showTimeline) {
+        config.timeline = "slitscan"
+    }
+    return config
+}
diff --git a/app/templates/text.html b/app/templates/text.html
index 8e1b4f0..e096ee6 100644
--- a/app/templates/text.html
+++ b/app/templates/text.html
@@ -33,6 +33,7 @@
 {% if text.data.view == 'player' %}
 <script src="/static/js/player.js?2021112223"></script>
 {% else %}
+<script src="/static/js/pandora-scroll.js?2021112223"></script>
 <script src="/static/js/ascroll.js?2021112223"></script>
 {% endif %}
 {% endblock %}