Add LICENSE

recording now works in Firefox
less dependencies

.babelrc

@@ -1,12 +1,22 @@
 {
   "presets": [
-    ["env", {
+    [
-      "modules": false,
+      "env",
-      "targets": {
+      {
-        "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
+        "modules": false,
+        "targets": {
+          "browsers": [
+            "> 1%",
+            "last 2 versions",
+            "not ie <= 8"
+          ]
+        }
       }
-    }],
+    ],
     "stage-2"
   ],
-  "plugins": ["transform-vue-jsx", "transform-runtime"]
+  "plugins": [
+    "transform-vue-jsx",
+    "transform-runtime"
+  ]
 }

.eslintrc.js

@@ -1,25 +1,35 @@
-// https://eslint.org/docs/user-guide/configuring
-
 module.exports = {
-  root: true,
+  "env": {
-  parser: 'babel-eslint',
+    "browser": true,
-  parserOptions: {
+    "es6": true,
-    sourceType: 'module'
   },
-  env: {
+  "extends": [
-    browser: true,
+    "eslint:recommended",
-  },
+    "plugin:vue/essential",
-  // https://github.com/standard/standard/blob/master/docs/RULES-en.md
-  extends: 'standard',
-  // required to lint *.vue files
-  plugins: [
-    'html'
   ],
-  // add your custom rules here
+  "globals": {
-  rules: {
+    "Atomics": "readonly",
-    // allow async-await
+    "SharedArrayBuffer": "readonly",
-    'generator-star-spacing': 'off',
+  },
-    // allow debugger during development
+  "parserOptions": {
-    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off'
+    "ecmaVersion": 2018,
-  }
+    "sourceType": "module",
-}
+  },
+  "plugins": [
+    "vue",
+  ],
+  "rules": {
+    "linebreak-style": [
+      "error",
+      "unix",
+    ],
+    "quotes": [
+      "error",
+      "double",
+    ],
+    "semi": [
+      "error",
+      "always",
+    ],
+  },
+};

.postcssrc.js

@@ -5,6 +5,6 @@ module.exports = {
     "postcss-import": {},
     "postcss-url": {},
     // to edit target browsers: use "browserslist" field in package.json
-    "autoprefixer": {}
+    "autoprefixer": {},
-  }
+  },
-}
+};

CHANGELOG.md

@@ -0,0 +1,37 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.1.1] - 2019-11-02
+
+### Added
+
+- Version label and link to gitlab repo to sidebar
+
+### Changed
+
+- Cleaned up UI
+- Recording is now done through `MediaRecorder` API instead of `ccapture.js` - less dependencies, works on firefox
+
+## [1.1.0] - 2019-11-01
+
+### Added
+
+- Loop & fullscreen button
+- Discarding / filtering out partial frames
+- Slices can have an offset from origin
+- Slice size and offset can be set by clicking on canvas
+
+## [1.0.0] - 2018-02-26
+
+Initial version. Supports recording, basic slitscan functionality.
+
+[unreleased]: https://gitlab.com/tmladek/slitscan/compare/v1.1.1...master
+[1.1.1]: https://gitlab.com/tmladek/slitscan/compare/v1.1.0...v1.1.1
+[1.1.0]: https://gitlab.com/tmladek/slitscan/compare/v1.0.0...v1.1.0
+[1.0.0]: https://gitlab.com/tmladek/slitscan/-/tags/v1.0.0

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Tomáš Mládek
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

config/dev.env.js

@@ -1,7 +1,7 @@
-'use strict'
+"use strict";
-const merge = require('webpack-merge')
+const merge = require("webpack-merge");
-const prodEnv = require('./prod.env')
+const prodEnv = require("./prod.env");
 
 module.exports = merge(prodEnv, {
-  NODE_ENV: '"development"'
+  NODE_ENV: "\"development\"",
-})
+});

config/index.js

@@ -1,19 +1,19 @@
-'use strict'
+"use strict";
 // Template version: 1.2.8
 // see http://vuejs-templates.github.io/webpack for documentation.
 
-const path = require('path')
+const path = require("path");
 
 module.exports = {
   dev: {
 
     // Paths
-    assetsSubDirectory: 'static',
+    assetsSubDirectory: "static",
-    assetsPublicPath: '/',
+    assetsPublicPath: "/",
     proxyTable: {},
 
     // Various Dev Server settings
-    host: 'localhost', // can be overwritten by process.env.HOST
+    host: "localhost", // can be overwritten by process.env.HOST
     port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
     autoOpenBrowser: false,
     errorOverlay: true,
@@ -33,7 +33,7 @@ module.exports = {
      */
 
     // https://webpack.js.org/configuration/devtool/#development
-    devtool: 'cheap-module-eval-source-map',
+    devtool: "cheap-module-eval-source-map",
 
     // If you have problems debugging vue-files in devtools,
     // set this to false - it *may* help
@@ -45,12 +45,12 @@ module.exports = {
 
   build: {
     // Template for index.html
-    index: path.resolve(__dirname, '../dist/index.html'),
+    index: path.resolve(__dirname, "../dist/index.html"),
 
     // Paths
-    assetsRoot: path.resolve(__dirname, '../dist'),
+    assetsRoot: path.resolve(__dirname, "../dist"),
-    assetsSubDirectory: 'static',
+    assetsSubDirectory: "static",
-    assetsPublicPath: '/tools/slitscan',
+    assetsPublicPath: "/tools/slitscan",
 
     /**
      * Source Maps
@@ -58,19 +58,19 @@ module.exports = {
 
     productionSourceMap: true,
     // https://webpack.js.org/configuration/devtool/#production
-    devtool: '#source-map',
+    devtool: "#source-map",
 
     // Gzip off by default as many popular static hosts such as
     // Surge or Netlify already gzip all static assets for you.
     // Before setting to `true`, make sure to:
     // npm install --save-dev compression-webpack-plugin
     productionGzip: false,
-    productionGzipExtensions: ['js', 'css'],
+    productionGzipExtensions: ["js", "css"],
 
     // Run the build command with an extra argument to
     // View the bundle analyzer report after build finishes:
     // `npm run build --report`
     // Set to `true` or `false` to always turn it on or off
-    bundleAnalyzerReport: process.env.npm_config_report
+    bundleAnalyzerReport: process.env.npm_config_report,
-  }
+  },
-}
+};

config/prod.env.js

@@ -1,4 +1,8 @@
-'use strict'
+"use strict";
+const package_json = require("../package.json")
+
 module.exports = {
-  NODE_ENV: '"production"'
+  NODE_ENV: "\"production\"",
-}
+  VERSION: JSON.stringify(package_json.version),
+  HOMEPAGE_URL: JSON.stringify(package_json.homepage)
+};

package.json

@@ -1,8 +1,9 @@
 {
   "name": "slitscan_vue",
-  "version": "1.0.0",
+  "version": "1.1.1",
-  "description": "A Vue.js project",
+  "description": "A video experiment for converting static images to strobe sequences.",
-  "author": "Tomáš Mládek <tmladek@inventati.org>",
+  "homepage": "https://gitlab.com/tmladek/slitscan",
+  "author": "Tomáš Mládek <t@mldk.cz>",
   "private": true,
   "scripts": {
     "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
@@ -11,12 +12,9 @@
     "build": "node build/build.js"
   },
   "dependencies": {
-    "bowser": "^1.9.2",
-    "ccapture.js": "^1.0.7",
     "q": "^1.5.1",
     "sprintf-js": "^1.1.1",
-    "vue": "^2.5.2",
+    "vue": "^2.5.2"
-    "whammy": "0.0.1"
   },
   "devDependencies": {
     "autoprefixer": "^7.1.2",
@@ -41,6 +39,7 @@
     "eslint-plugin-node": "^5.2.0",
     "eslint-plugin-promise": "^3.4.0",
     "eslint-plugin-standard": "^3.0.1",
+    "eslint-plugin-vue": "^5.2.3",
     "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^1.1.4",
     "friendly-errors-webpack-plugin": "^1.6.1",

src/App.vue

@@ -1,62 +1,92 @@
 <template>
   <div id="app">
     <div id="menu-wrap">
-      <Sidebar ref="sidebar" @loadImage="loadImage" @guideSize="guideSize"/>
+      <Sidebar ref="sidebar" @params="setParams" :slice="slice" :offset="offset" @loadImage="loadImage"/>
     </div>
     <div id="canvas-wrap">
-      <Canvas ref="canvas"/>
+      <Canvas ref="canvas" @params="setParams" :slice="slice" :offset="offset"/>
     </div>
   </div>
 </template>
 
 <script>
-  import Canvas from './components/Canvas'
+import Canvas from "./components/Canvas";
-  import Sidebar from './components/Sidebar'
+import Sidebar from "./components/Sidebar";
 
-  export default {
+export default {
-    name: 'app',
+  name: "app",
-    components: {
+  components: {
-      Canvas, Sidebar
+    Canvas, Sidebar,
+  },
+  data () {
+    return {
+      slice: [64, 64],
+      offset: [0, 0],
+    };
+  },
+  methods: {
+    loadImage: function (url) {
+      this.$refs.canvas.imageUrl = url;
     },
-    methods: {
+    setParams: function (coords) {
-      loadImage: function (url) {
+      switch (coords.type) {
-        this.$refs.canvas.imageUrl = url
+        case "slice":
-      },
+          this.slice = [Math.max(2, coords.x), Math.max(2, coords.y)];
-      guideSize: function (size) {
+          break;
-        this.$refs.canvas.slice = size
+        case "offset":
+          this.offset = [coords.x, coords.y];
+          break;
       }
-    }
+    },
-  }
+  },
+};
 </script>
 
 <style>
-  html, body, #app {
+html, body, #app {
-    height: 100%;
+  height: 100%;
-    width: 100%;
+  width: 100%;
-    border: 0;
+  border: 0;
-    margin: 0;
+  margin: 0;
 
-    font-family: Consolas, Inconsolata, monospace, serif;
+  font-family: Consolas, Inconsolata, monospace, serif;
-    line-height: .97em;
+  line-height: .97em;
-    font-size: .95em;
+  font-size: .95em;
-  }
+}
 
-  input {
+input, button {
-    font-size: .95em;
+  font-family: Consolas, Inconsolata, monospace, serif;
-  }
+}
 
-  #menu-wrap, #canvas-wrap {
+input {
-    display: inline-block;
+  font-size: .95em;
-  }
+  padding: 4px 0;
+  background: white;
+  border: 1px solid black;
+}
 
-  #menu-wrap {
+input[type="file"] {
-    width: 20%;
+  border: none;
-    height: 100%;
+}
-    float: left;
-  }
 
-  #canvas-wrap {
+button {
-    width: 80%;
+  background: white;
-    height: 100%;
+  border: 1px solid black;
-  }
+  box-shadow: 2px 2px #272727;
+}
+
+#menu-wrap, #canvas-wrap {
+  display: inline-block;
+}
+
+#menu-wrap {
+  width: 20%;
+  height: 100%;
+  float: left;
+}
+
+#canvas-wrap {
+  width: 80%;
+  height: 100%;
+}
 </style>

src/components/Canvas.vue

@@ -1,98 +1,129 @@
 <template>
   <div id="canvas-container">
-    <canvas ref="canvas" id="canvas"></canvas>
+    <canvas ref="canvas" id="canvas" @mousedown="onMouse" @mousemove="onMouse" oncontextmenu="return false;"></canvas>
   </div>
 </template>
 
 <script>
-  import {getDimsFit} from '../helpers/image.js'
+import {getDimsFit} from "../helpers/image.js";
 
-  export default {
+export default {
-    name: 'Canvas',
+  name: "Canvas",
-    data: function () {
+  data: function () {
-      return {
+    return {
-        imageUrl: '',
+      imageUrl: "",
-        image: null,
+      image: null,
-        imageLoaded: false,
+      imageLoaded: false,
-        slice: [0, 0]
+      ratio: 1,
-      }
+    };
+  },
+  props: ["slice", "offset"],
+  computed: {},
+  watch: {
+    imageUrl: function (url) {
+      this.loadImage(url);
     },
-    computed: {},
+    slice: function () {
-    watch: {
+      this.refresh();
-      imageUrl: function (url) {
-        this.loadImage(url)
-      },
-      slice: function () {
-        this.refresh()
-      }
     },
-    mounted: function () {
+    offset: function () {
-      window.addEventListener('resize', this.handleResize)
+      this.refresh();
-      this.handleResize()
     },
-    methods: {
+  },
-      loadImage: function (imageUrl) {
+  mounted: function () {
-        this.image = new Image()
+    window.addEventListener("resize", this.handleResize);
-        this.image.onload = () => {
+    this.handleResize();
-          this.imageLoaded = true
+  },
-          this.$bus.$emit('imageLoaded', this.image)
+  methods: {
-          this.refresh()
+    loadImage: function (imageUrl) {
+      this.image = new Image();
+      this.image.onload = () => {
+        this.imageLoaded = true;
+        this.$bus.$emit("imageLoaded", this.image);
+        this.refresh();
+      };
+      this.image.src = imageUrl;
+    },
+    refresh: function () {
+      if (!this.imageLoaded) return;
+      let image = this.image;
+      let canvas = this.$refs.canvas;
+      let ctx = canvas.getContext("2d");
+
+      ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+      let dims = getDimsFit(image.width, image.height, canvas.width, canvas.height);
+      ctx.drawImage(image,
+        0, 0, image.width, image.height,
+        0, 0, dims.width, dims.height);
+
+      this.ratio = dims.width / image.width;
+
+      let sliceX = parseInt(this.slice[0]) * this.ratio;
+      let sliceY = parseInt(this.slice[1]) * this.ratio;
+
+      if (sliceX > 0 && sliceY > 0) {
+        for (let x = this.offset[0] * this.ratio; x < dims.width; x += sliceX) {
+          ctx.beginPath();
+          ctx.moveTo(x, this.offset[1] * this.ratio);
+          ctx.lineTo(x, dims.height);
+          ctx.strokeStyle = "red";
+          ctx.stroke();
         }
-        this.image.src = imageUrl
+        for (let y = this.offset[1] * this.ratio; y < dims.height; y += sliceY) {
-      },
+          ctx.beginPath();
-      refresh: function () {
+          ctx.moveTo(this.offset[0] * this.ratio, y);
-        if (!this.imageLoaded) return
+          ctx.lineTo(dims.width, y);
-        let image = this.image
+          ctx.strokeStyle = "red";
-        let canvas = this.$refs.canvas
+          ctx.stroke();
-        let ctx = canvas.getContext('2d')
-
-        ctx.clearRect(0, 0, canvas.width, canvas.height)
-
-        let dims = getDimsFit(image.width, image.height, canvas.width, canvas.height)
-        ctx.drawImage(image,
-          0, 0, image.width, image.height,
-          0, 0, dims.width, dims.height)
-
-        let ratio = dims.width / image.width
-
-        let sliceX = parseInt(this.slice[0]) * ratio
-        let sliceY = parseInt(this.slice[1]) * ratio
-
-        if (sliceX > 0 && sliceY > 0) {
-          for (let x = 0; x < dims.width; x += sliceX) {
-            ctx.beginPath()
-            ctx.moveTo(x, 0)
-            ctx.lineTo(x, dims.height)
-            ctx.strokeStyle = 'red'
-            ctx.stroke()
-          }
-          for (let y = 0; y < dims.height; y += sliceY) {
-            ctx.beginPath()
-            ctx.moveTo(0, y)
-            ctx.lineTo(dims.width, y)
-            ctx.strokeStyle = 'red'
-            ctx.stroke()
-          }
         }
-      },
-      handleResize: function () {
-        let canvasContainer = document.getElementById('canvas-container')
-        let canvas = document.getElementById('canvas')
-
-        canvas.width = canvasContainer.offsetWidth - 10
-        canvas.height = canvasContainer.offsetHeight - 10
-        this.refresh()
       }
-    }
+    },
-  }
+    handleResize: function () {
+      let canvasContainer = document.getElementById("canvas-container");
+      let canvas = document.getElementById("canvas");
+
+      canvas.width = canvasContainer.offsetWidth - 10;
+      canvas.height = canvasContainer.offsetHeight - 10;
+      this.refresh();
+    },
+    onMouse: function (ev) {
+      if (ev.buttons === 0) {
+        return;
+      }
+      ev.preventDefault();
+
+      const type = {
+        1: "slice",
+        2: "offset",
+      }[ev.buttons];
+
+      if (type !== undefined) {
+        let x, y;
+        switch (type) {
+          case "slice":
+            x = Math.round((ev.x - ev.target.offsetLeft) / this.ratio - this.offset[0]);
+            y = Math.round((ev.y - ev.target.offsetTop) / this.ratio - this.offset[1]);
+            break;
+          case "offset":
+            x = Math.round((ev.x - ev.target.offsetLeft) / this.ratio);
+            y = Math.round((ev.y - ev.target.offsetTop) / this.ratio);
+            break;
+        }
+        this.$emit("params", {type, x, y});
+      }
+      return false;
+    },
+  },
+};
 </script>
 
 <style scoped>
-  #canvas-container {
+#canvas-container {
-    width: 100%;
+  width: 100%;
-    height: 100%;
+  height: 100%;
-    margin: 0;
+  margin: 0;
-    border: 0;
+  border: 0;
-    padding: 0;
+  padding: 0;
-  }
+}
 </style>

src/components/Player.vue

@@ -1,26 +1,30 @@
 <template>
-  <div id="player" :class="{fullscreen: fullscreen}">
+  <div id="player">
     <div>
       <label for="zoom">Zoom:</label>
-      <input type="number" min="1" :max="50" value="1" class="slider" v-model.number="zoom" id="zoom">
+      <input type="number" min="0.1" value="1" step="0.1" class="slider" v-model.number="zoom" id="zoom">
     </div>
-    <div id="player-canvas-container">
+    <div class="player-container">
       <canvas ref="canvas" id="player-canvas"
               :height="canvas_height" :width="canvas_width">
       </canvas>
-    </div>
-    <div id="controls" class="{'fullscreen-controls': fullscreen}">
-      <div>
-        <label for="recordMode">Record output</label>
-        <input type="checkbox" v-model="record" id="recordMode">
-      </div>
       <div>
         <input type="range" min="0" :max="frames - 1" value="0" class="slider"
-               v-model.number="position" :disabled=record>
+               v-model.number="position" :disabled=recording>
+      </div>
+    </div>
+    <div class="controls">
+      <div>
+        <button @click="playOnceOrPause">{{!this.playing ? "PLAY ONCE" : "STOP"}}</button>
       </div>
       <div>
-        <button @click="playPause">{{buttonLabel}}</button>
+        <button @click="recordSequence">RECORD</button>
       </div>
+      <div>
+        <button @click="loopFullscreen">LOOP & FULLSCREEN</button>
+      </div>
+    </div>
+    <div class="options">
       <div>
         <label for="sort">Sort by size</label>
         <input type="checkbox" v-model="sortBySize" id="sort">
@@ -32,202 +36,270 @@
         </label>
         <input type="checkbox" v-model="sortDirection" id="sortDirection">
       </div>
+      <div>
+        <label for="discard">Discard partial frames</label>
+        <input type="checkbox" v-model="discardPartial" id="discard">
+      </div>
     </div>
   </div>
 </template>
 
 <script>
-  import CCapture from 'ccapture.js'
-  import bowser from 'bowser'
 
-  export default {
+export default {
-    name: 'player',
+  name: "player",
-    props: {
+  props: {
-      width: Number,
+    width: Number,
-      height: Number
+    height: Number,
+    offset: Array,
+  },
+  data: function () {
+    return {
+      image: null,
+      playing: false,
+      zoom: 1,
+      recording: false,
+      looping: false,
+      sortBySize: false,
+      sortDirection: false,
+      discardPartial: false,
+      position: 0,
+      tmp_ctx: null,
+      animation_id: null,
+      recorder: null,
+    };
+  },
+  computed: {
+    frames: function () {
+      if (this.image === null) return 0;
+      const roundFn = this.discardPartial ? Math.floor : Math.ceil;
+      return roundFn((this.image.width - this.offset[0]) / this.width) * roundFn((this.image.height - this.offset[1]) / this.height);
     },
-    data: function () {
+    canvas_height: function () {
-      return {
+      return this.height * this.zoom;
-        image: null,
+    },
-        playing: false,
+    canvas_width: function () {
-        zoom: 1,
+      return this.width * this.zoom;
-        fullscreen: false,
+    },
-        sortBySize: false,
+    frame_sequence: function () {
-        sortDirection: false,
+      if (this.image === null) return [];
-        position: 0,
+
-        tmp_ctx: null,
+      let sequence = [];
-        animation_id: null,
+      for (let pos = 0; pos < this.frames; pos++) {
-        record: false,
+        let wb = (this.discardPartial ? Math.floor : Math.ceil)((this.image.width - this.offset[0]) / this.width); // width_blocks
-        capturer: new CCapture({
+        let x = this.offset[0] + (pos % wb) * this.width; // x offset
-          format: 'webm',
+        let w = x + this.width < this.image.width ? this.width : this.image.width - x; // frame width
-          verbose: true
+        let y = this.offset[1] + Math.floor(pos / wb) * this.height; // y offset
-        })
+        let h = y + this.height < this.image.height ? this.height : this.image.height - y; // frame height
+        sequence.push([x, y, w, h]);
+      }
+      if (this.sortBySize) {
+        let tmpCanvas = document.createElement("canvas");
+        let ctx = tmpCanvas.getContext("2d");
+        let sizes = sequence.map((el, i) => {
+          if (tmpCanvas.width !== el[2] ||
+            tmpCanvas.height !== el[3]) {
+            tmpCanvas.width = el[2];
+            tmpCanvas.height = el[3];
+          }
+          ctx.drawImage(this.image, el[0], el[1], el[2], el[3],
+            0, 0, el[2], el[3]);
+          return {index: i, length: tmpCanvas.toDataURL("image/png").length};
+        });
+
+        sizes.sort(function (a, b) {
+          return a.length - b.length;
+        });
+
+        if (!this.sortDirection) {
+          sizes.reverse();
+        }
+
+        return sizes.map(function (el) {
+          return sequence[el.index];
+        });
+      } else {
+        return sequence;
       }
     },
-    computed: {
+  },
-      frames: function () {
+  mounted: function () {
-        if (this.image === null) return 0
+    this.$bus.$on("imageLoaded", (image) => {
-        return Math.ceil(this.image.width / this.width) *
+      this.image = image;
-          Math.ceil(this.image.height / this.height)
+    });
-      },
+    this.clear("red");
-      canvas_height: function () {
+  },
-        return this.height * this.zoom
+  watch: {
-      },
+    canvas_width: function () {
-      canvas_width: function () {
+      setTimeout(() => {
-        return this.width * this.zoom
+        this.clear("red");
-      },
+      }, 0);
-      frame_sequence: function () {
+    },
-        if (this.image === null) return []
+    canvas_height: function () {
-
+      setTimeout(() => {
-        let sequence = []
+        this.clear("red");
-        for (let pos = 0; pos < this.frames; pos++) {
+      }, 0);
-          let wb = Math.ceil(this.image.width / this.width) // width_blocks
+    },
-          let x = (pos % wb) * this.width // x offset
+    frames: function () {
-          let w = x + this.width < this.image.width ? this.width : this.image.width - x // frame width
+      this.$emit("frames", this.frames);
-          let y = Math.floor(pos / wb) * this.height // y offset
+    },
-          let h = y + this.height < this.image.height ? this.height : this.image.height - y // frame height
+    position: function () {
-          sequence.push([x, y, w, h])
+      if (this.playing || this.image === null) return;
-        }
+      this.tmp_ctx = this.$refs.canvas.getContext("2d");
-        if (this.sortBySize) {
+      this.$render();
-          let tmpCanvas = document.createElement('canvas')
+    },
-          let ctx = tmpCanvas.getContext('2d')
+    looping: function () {
-          let sizes = sequence.map((el, i) => {
+      this.recording = false;
-            if (tmpCanvas.width !== el[2] ||
+    },
-              tmpCanvas.height !== el[3]) {
+    recording: function () {
-              tmpCanvas.width = el[2]
+      if (this.recording) {
-              tmpCanvas.height = el[3]
+        this.looping = false;
-            }
+        this.position = 0;
-            ctx.drawImage(this.image, el[0], el[1], el[2], el[3],
+      }
-              0, 0, el[2], el[3])
+    },
-            return {index: i, length: tmpCanvas.toDataURL('image/png').length}
+  },
-          })
+  methods: {
-
+    play: function () {
-          sizes.sort(function (a, b) {
+      if (this.frames === 0) {
-            return a.length - b.length
+        return;
-          })
+      }
-
+      if (!this.playing) {
-          if (!this.sortDirection) {
+        // eslint-disable-next-line no-console
-            sizes.reverse()
+        console.log("STARTED");
-          }
+        this.tmp_ctx = this.$refs.canvas.getContext("2d");
-
+        this.$render_advance();
-          return sizes.map(function (el) {
+        this.playing = true;
-            return sequence[el.index]
+      }
-          })
+    },
-        } else {
+    stop: function () {
-          return sequence
+      if (this.playing) {
-        }
+        // eslint-disable-next-line no-console
-      },
+        console.log("STOPPED");
-      buttonLabel: function () {
+        cancelAnimationFrame(this.animation_id);
-        if (!this.playing) {
+        this.playing = false;
-          if (this.record) {
+        if (this.recording && this.recorder) {
-            return 'RECORD'
+          this.recorder.stop();
-          } else {
+          this.recording = false;
-            return 'PLAY'
-          }
-        } else {
-          return 'STOP'
         }
       }
     },
-    mounted: function () {
+    playOnceOrPause: function () {
-      this.$bus.$on('imageLoaded', (image) => {
+      if (!this.playing) {
-        this.image = image
+        this.looping = false;
-      })
+        this.recording = false;
-      this.clear('red')
+        this.position = 0;
+        this.play();
+      } else {
+        this.stop();
+      }
     },
-    watch: {
+    recordSequence: function () {
-      canvas_width: function () {
+      try {
+        this.createRecorder();
+      } catch (err) {
+        alert("Error initializing recording!\n" + err);
+        return;
+      }
+      this.looping = false;
+      this.recording = true;
+      this.stop();
+      this.position = 0;
+      this.recorder.start();
+      this.play();
+    },
+    loopFullscreen: function () {
+      this.play();
+      this.looping = true;
+      this.recording = false;
+      document.getElementById("player-canvas").requestFullscreen();
+    },
+    clear: function (style) {
+      let ctx = this.$refs.canvas.getContext("2d");
+      ctx.fillStyle = style;
+      ctx.fillRect(0, 0, parseInt(this.canvas_width), parseInt(this.canvas_height));
+    },
+    $render_advance: function () {
+      this.$render();
+      if (this.position < this.frames) {
+        this.position += 1;
+        this.animation_id = requestAnimationFrame(this.$render_advance);
+      } else {
+        if (!this.looping) {
+          this.stop();
+        } else {
+          this.animation_id = requestAnimationFrame(this.$render_advance);
+        }
+        this.position = 0;
+      }
+    },
+    $render: function () {
+      let frame = this.frame_sequence[this.position];
+      if (frame === undefined) return;
+      let [x, y, w, h] = frame;
+      if (w !== this.width || h !== this.height) this.clear("black");
+      this.tmp_ctx.drawImage(this.image,
+        x, y, w, h,
+        0, 0, w * this.zoom, h * this.zoom);
+    },
+    createRecorder: function () {
+      const stream = this.$refs.canvas.captureStream();
+      this.recorder = new MediaRecorder(stream, {mimeType: "video/webm"});
+      if (!this.recorder) {
+        throw new Error("Unknown error, couldn't initialize recorder.");
+      }
+      this.recorder.ondataavailable = function (event) {
+        if (!event.data) {
+          alert.error("Error during recording: No data available!");
+          return;
+        }
+        const blob = new Blob([event.data], {type: "video/webm"});
+        const url = window.URL.createObjectURL(blob);
+        const a = document.createElement("a");
+        a.style.display = "none";
+        a.href = url;
+        a.download = "slitscan.webm";
+        document.body.appendChild(a);
+        a.click();
         setTimeout(() => {
-          this.clear('red')
+          document.body.removeChild(a);
-        }, 0)
+          window.URL.revokeObjectURL(url);
-      },
+        }, 100);
-      canvas_height: function () {
+      };
-        setTimeout(() => {
-          this.clear('red')
-        }, 0)
-      },
-      position: function () {
-        if (this.playing || this.image === null) return
-        this.tmp_ctx = this.$refs.canvas.getContext('2d')
-        this.$render()
-      },
-      record: function () {
-        if (this.record) {
-          this.position = 0
-          if (!bowser.chrome) {
-            alert('Recording only supported in Chrome :( \n' +
-              'https://github.com/spite/ccapture.js/#limitations')
-          }
-        }
-      }
     },
-    methods: {
+  },
-      playPause: function () {
+};
-        if (this.frames === 0) {
-          return
-        }
-        this.playing = !this.playing
-        if (this.playing) {
-          this.tmp_ctx = this.$refs.canvas.getContext('2d')
-          if (this.record) this.capturer.start()
-          this.$render_advance()
-        } else {
-          cancelAnimationFrame(this.animation_id)
-        }
-      },
-      clear: function (style) {
-        let ctx = this.$refs.canvas.getContext('2d')
-        ctx.fillStyle = style
-        ctx.fillRect(0, 0, parseInt(this.canvas_width), parseInt(this.canvas_height))
-      },
-      $render: function () {
-        let frame = this.frame_sequence[this.position]
-        if (frame === undefined) return
-        let [x, y, w, h] = frame
-        if (w !== this.width || h !== this.height) this.clear('black')
-        this.tmp_ctx.drawImage(this.image,
-          x, y, w, h,
-          0, 0, w * this.zoom, h * this.zoom)
-      },
-      $render_advance: function () {
-        this.$render()
-        if (this.position < this.frames) {
-          this.position += 1
-          this.animation_id = requestAnimationFrame(this.$render_advance)
-          if (this.record) this.capturer.capture(this.$refs.canvas)
-        } else {
-          this.playPause()
-          this.position = 0
-          if (this.record) {
-            this.capturer.stop()
-            this.capturer.save()
-          }
-        }
-      }
-    }
-  }
 </script>
 
 <style scoped>
-  #player {
+#player {
-    text-align: center;
+  text-align: center;
-  }
+}
 
-  .fullscreen {
+#zoom {
-    position: absolute;
+  width: 3em;
-    top: 0;
+  text-align: center;
-    left: 0;
+}
-    background-color: rgba(1, 1, 1, .9);
-    width: 100%;
-    height: 100%;
-  }
 
-  .fullscreen-controls {
+.player-container {
-    position: absolute;
+  padding: 2em 0 1em 0;
-    bottom: 0;
+}
-  }
 
-  #zoom {
+.controls, .options {
-    width: 3em;
+  display: flex;
-  }
+  flex-direction: column;
+}
+
+.controls button {
+  width: 12em;
+  margin: .25em;
+}
+
+.options {
+  padding-top: 1em;
+}
+
+.options div {
+  display: flex;
+  justify-content: space-between;
+}
 </style>

src/components/Sidebar.vue

@@ -1,185 +1,247 @@
 <template>
   <div id="sidebar-container">
-    <div>
+    <div class="sidebar-section">
-      <input type="file" id="file" @change="loadImage($event)">
+      <div>
+        <input type="file" id="file" @change="loadImage($event)">
+      </div>
+      <div class="section-formlike">
+        <label>Image size:</label>
+        <div class="readout">{{imageSize[0]}} x {{imageSize[1]}}</div>
+      </div>
     </div>
-    <div>
+    <div class="sidebar-section">
-      <label>Image size: {{imageSize[0]}} x {{imageSize[1]}}</label>
+      <div class="section-formlike">
+        <label for="slice_x">Slice X: </label>
+        <input class="spinBox" id="slice_x" v-model.number="guideSizeX" type="number"
+               min="2" :max="imageSize[0]/2" step="1" value="64">
+      </div>
+      <div>
+        <label for="slice_x">X remainder: {{this.imageSize[0] % this.guideSizeX}}</label>
+      </div>
+      <div class="section-formlike">
+        <label for="slice_y">Slice Y: </label>
+        <input class="spinBox" id="slice_y" v-model.number="guideSizeY" type="number"
+               min="2" :max="imageSize[1]/2" step="1" value="64">
+      </div>
+      <div>
+        <label for="slice_x">Y remainder: {{this.imageSize[1] % this.guideSizeY}}</label>
+      </div>
+      <div class="section-formlike">
+        <label for="lockSize">Maintain square ratio: </label>
+        <input type="checkbox" id="lockSize" v-model="lockSize">
+      </div>
+      <div class="section-formlike">
+        <label for="cleanSize">Allow only clean sizes: </label>
+        <input type="checkbox" id="cleanSize" v-model="cleanSize">
+      </div>
     </div>
-    <hr>
+    <div class="sidebar-section">
-    <div>
+      <div class="section-formlike">
-      <label for="slice_x">Slice X: </label>
+        <label>Offset: x={{offset[0]}}, y={{offset[1]}}</label>
-      <input class="spinBox" id="slice_x" v-model.number="guideSizeX" type="number" min="2" max="1024" step="1"
+        <button @click="$emit('params', {type: 'offset', x: 0, y: 0})">RESET</button>
-             value="64">
+      </div>
     </div>
-    <div>
+    <div class="sidebar-section">
-      <label for="slice_x">No X remainder: {{noXremainder}}</label>
+      <div class="section-formlike">
+        <label>Total amount of slices:</label>
+        <div class="readout">{{slices}}</div>
+      </div>
+      <div class="section-formlike">
+        <label for="fps">FPS: </label>
+        <input class="spinBox" id="fps" v-model="fps" type="number" min="1" max="60" step="1" value="60" disabled>
+      </div>
+      <div class="section-formlike">
+        <label>Est. length:</label>
+        <div class="readout">{{length}}</div>
+      </div>
     </div>
-    <div>
+    <div class="sidebar-section player-section">
-      <label for="slice_y">Slice Y: </label>
+      <player class="player" :width="guideSizeX" :height="guideSizeY" :offset="offset" @frames="(n)=>{slices=n}"/>
-      <input class="spinBox" id="slice_y" v-model.number="guideSizeY" type="number" min="2" max="1024" step="1"
-             value="64">
     </div>
-    <div>
+    <div class="footer"><a :href="env.HOMEPAGE_URL">Version: {{env.VERSION}}</a></div>
-      <label for="slice_x">No Y remainder: {{noYremainder}}</label>
-    </div>
-    <div>
-      <label for="lockSize">Maintain square ratio: </label>
-      <input type="checkbox" id="lockSize" v-model="lockSize">
-    </div>
-    <div>
-      <label for="cleanSize">Allow only clean sizes: </label>
-      <input type="checkbox" id="cleanSize" v-model="cleanSize">
-    </div>
-    <hr>
-    <div>
-      <label>Total amount of slices: {{slices}}</label>
-    </div>
-    <div>
-      <label for="fps">FPS: </label>
-      <input class="spinBox" id="fps" v-model="fps" type="number" min="1" max="60" step="1" value="60" disabled>
-    </div>
-    <div>
-      <label>Est. length: {{length}}</label>
-    </div>
-    <hr>
-    <player :width="guideSizeX" :height="guideSizeY"/>
   </div>
 </template>
 
 <!--suppress JSSuspiciousNameCombination -->
 <script>
-  import Player from '@/components/Player'
+import Player from "@/components/Player";
 
-  export default {
+export default {
-    name: 'Sidebar',
+  name: "Sidebar",
-    components: {
+  components: {
-      player: Player
+    player: Player,
-    },
+  },
-    data: function () {
+  props: ["slice", "offset"],
-      return {
+  data: function () {
-        imageSize: [-1, -1],
+    return {
-        guideSizeX: 64,
+      imageSize: [-1, -1],
-        guideSizeY: 64,
+      guideSizeX: 64,
-        lastGuideSizeX: 64,
+      guideSizeY: 64,
-        lastGuideSizeY: 64,
+      lastGuideSizeX: 64,
-        lockSize: true,
+      lastGuideSizeY: 64,
-        cleanSize: false,
+      lockSize: true,
-        fps: 60
+      cleanSize: false,
-      }
+      slices: 0,
-    },
+      fps: 60,
-    watch: {
+    };
-      guideSizeX (size) {
+  },
-        if (this.lockSize) this.guideSizeY = size
+  watch: {
-        if (this.cleanSize) {
+    guideSizeX (size) {
-          let tmpSize = parseInt(size)
+      if (this.lockSize) this.guideSizeY = size;
-          while (this.imageSize[0] % tmpSize !== 0 &&
+      if (this.cleanSize) {
-          tmpSize < this.imageSize[0] &&
+        let tmpSize = parseInt(size);
-          tmpSize > 2) {
+        while (this.imageSize[0] % tmpSize !== 0 &&
-            if (this.lastGuideSizeX < size) {
+        tmpSize < this.imageSize[0] &&
-              tmpSize += 1
+        tmpSize > 2) {
-            } else {
+          if (this.lastGuideSizeX < size) {
-              tmpSize -= 1
+            tmpSize += 1;
-            }
+          } else {
-          }
+            tmpSize -= 1;
-          if (tmpSize !== 2 && tmpSize !== this.imageSize[0]) {
-            this.guideSizeX = tmpSize
           }
         }
-        this.$emit('guideSize', [this.guideSizeX, this.guideSizeY])
+        if (tmpSize !== 2 && tmpSize !== this.imageSize[0]) {
-        this.lastGuideSizeX = this.guideSizeX
+          this.guideSizeX = tmpSize;
-        this.lastGuideSizeY = this.guideSizeY
-      },
-      guideSizeY (size) {
-        if (this.lockSize) this.guideSizeX = size
-        if (this.cleanSize) {
-          let tmpSize = parseInt(size)
-          while (this.imageSize[1] % tmpSize !== 0 &&
-          tmpSize < this.imageSize[1] &&
-          tmpSize > 2) {
-            if (this.lastGuideSizeY < size) {
-              tmpSize += 1
-            } else {
-              tmpSize -= 1
-            }
-          }
-          if (tmpSize !== 2 && tmpSize !== this.imageSize[1]) {
-            this.guideSizeY = tmpSize
-          }
-        }
-        this.$emit('guideSize', [this.guideSizeX, this.guideSizeY])
-        this.lastGuideSizeX = this.guideSizeX
-        this.lastGuideSizeY = this.guideSizeY
-      },
-      lockSize: function (locked) {
-        if (locked) {
-          if (this.guideSizeX < this.guideSizeY) this.guideSizeY = this.guideSizeX
-          else this.guideSizeX = this.guideSizeY
-          this.cleanSize = false
-        }
-      },
-      cleanSize: function (clean) {
-        if (clean) {
-          this.lockSize = false
         }
       }
+      this.$emit("params", {
+        type: "slice",
+        x: this.guideSizeX,
+        y: this.guideSizeY,
+      });
+      this.lastGuideSizeX = this.guideSizeX;
+      this.lastGuideSizeY = this.guideSizeY;
     },
-    computed: {
+    guideSizeY (size) {
-      slices: function () {
+      if (this.lockSize) this.guideSizeX = size;
-        if (this.imageSize[0] === -1 || this.imageSize[1] === -1) {
+      if (this.cleanSize) {
-          return '-'
+        let tmpSize = parseInt(size);
+        while (this.imageSize[1] % tmpSize !== 0 &&
+        tmpSize < this.imageSize[1] &&
+        tmpSize > 2) {
+          if (this.lastGuideSizeY < size) {
+            tmpSize += 1;
+          } else {
+            tmpSize -= 1;
+          }
+        }
+        if (tmpSize !== 2 && tmpSize !== this.imageSize[1]) {
+          this.guideSizeY = tmpSize;
+        }
+      }
+      this.$emit("params", {
+        type: "slice",
+        x: this.guideSizeX,
+        y: this.guideSizeY,
+      });
+      this.lastGuideSizeX = this.guideSizeX;
+      this.lastGuideSizeY = this.guideSizeY;
+    },
+    slice: function (size) {
+      this.lockSize = size[0] === size[1];
+      this.guideSizeX = size[0];
+      this.guideSizeY = size[1];
+    },
+    lockSize: function (locked) {
+      if (locked) {
+        if (this.guideSizeX < this.guideSizeY) {
+          this.guideSizeY = this.guideSizeX;
         } else {
-          return Math.ceil(this.imageSize[0] / this.guideSizeX) *
+          this.guideSizeX = this.guideSizeY;
-            Math.ceil(this.imageSize[1] / this.guideSizeY)
         }
-      },
+        this.cleanSize = false;
-      length: function () {
-        if (this.imageSize[0] === -1 || this.imageSize[1] === -1) {
-          return '-'
-        } else {
-          let seconds = Math.round(this.slices / this.fps * 100) / 100
-
-          let mins = Math.floor(seconds / 60)
-          let secs = Math.round(seconds % 60)
-
-          return '~' + seconds + ' seconds' + (mins > 0 ? (' (' + mins + 'm ' + secs + 's)') : '')
-        }
-      },
-      noXremainder: function () {
-        return this.imageSize[0] % this.guideSizeX === 0
-      },
-      noYremainder: function () {
-        return this.imageSize[1] % this.guideSizeY === 0
       }
     },
-    methods: {
+    cleanSize: function (clean) {
-      loadImage (e) {
+      if (clean) {
-        let url = URL.createObjectURL(e.target.files[0])
+        this.lockSize = false;
-        this.$emit('loadImage', url)
       }
     },
-    mounted: function () {
+  },
-      this.$bus.$on('imageLoaded', (image) => {
+  computed: {
-        this.imageSize = [image.width, image.height]
+    length: function () {
-      })
+      if (this.imageSize[0] === -1 || this.imageSize[1] === -1) {
-      this.$emit('guideSize', [this.guideSizeX, this.guideSizeY])
+        return "-";
-    }
+      } else {
-  }
+        let seconds = Math.round(this.slices / this.fps * 100) / 100;
+
+        let mins = Math.floor(seconds / 60);
+        let secs = Math.round(seconds % 60);
+
+        return "~" + seconds + " seconds" + (mins > 0 ? (" (" + mins + "m " + secs + "s)") : "");
+      }
+    },
+    env: function () {
+      // eslint-disable-next-line no-undef
+      return process.env;
+    },
+  },
+  methods: {
+    loadImage (e) {
+      let url = URL.createObjectURL(e.target.files[0]);
+      this.$emit("loadImage", url);
+    },
+    setParams (coords) {
+      switch (coords.type) {
+        case "size":
+          this.lockSize = false;
+          this.guideSizeX = coords.x;
+          this.guideSizeY = coords.y;
+          break;
+      }
+    },
+  },
+  mounted: function () {
+    this.$bus.$on("imageLoaded", (image) => {
+      this.imageSize = [image.width, image.height];
+    });
+    this.$emit("guideSize", [this.guideSizeX, this.guideSizeY]);
+  },
+};
 </script>
 
 <style scoped>
-  #sidebar-container {
+#sidebar-container {
-    width: 100%;
+  display: flex;
-    height: 100%;
+  flex-direction: column;
+  width: 100%;
+  height: 100%;
 
-    border-right: 1px solid black;
+  border-right: 1px solid black;
-  }
+}
 
-  .spinBox {
+.sidebar-section {
-    height: 1em;
+  padding: .5em;
-  }
+  border-bottom: 1px solid grey;
+}
 
-  .green {
+.sidebar-section > div {
-    background-color: green;
+  padding: .25em;
-  }
+}
+
+.section-formlike {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.section-formlike input[type="number"] {
+  width: 4em;
+  text-align: center;
+}
+
+.section-formlike .readout {
+  min-width: 4em;
+  text-align: center;
+}
+
+.player-section {
+  border-bottom: none;
+}
+
+.footer {
+  position: absolute;
+  bottom: .5em;
+  left: .5em;
+}
 </style>

src/helpers/image.js

@@ -1,16 +1,16 @@
 export function getDimsFit (wOriginal, hOriginal, wContain, hContain) {
-  let origRatio = wOriginal / hOriginal
+  let origRatio = wOriginal / hOriginal;
-  let containRatio = wContain / hContain
+  let containRatio = wContain / hContain;
 
   if (origRatio > containRatio) {
     return {
       width: wContain,
-      height: wContain / origRatio
+      height: wContain / origRatio,
-    }
+    };
   } else {
     return {
       width: origRatio * hContain,
-      height: hContain
+      height: hContain,
-    }
+    };
   }
 }

src/main.js

@@ -1,15 +1,15 @@
 // The Vue build version to load with the `import` command
 // (runtime-only or standalone) has been set in webpack.base.conf with an alias.
-import Vue from 'vue'
+import Vue from "vue";
-import App from './App'
+import App from "./App";
 
-Vue.config.productionTip = false
+Vue.config.productionTip = false;
 
-Vue.prototype.$bus = new Vue({})
+Vue.prototype.$bus = new Vue({});
 
 /* eslint-disable no-new */
 new Vue({
-  el: '#app',
+  el: "#app",
-  template: '<App/>',
+  template: "<App/>",
-  components: { App }
+  components: {App},
-})
+});