integrated html2canvas and jsPDF to generate PDFs

package-lock.json

@@ -4223,6 +4223,11 @@
         }
       }
     },
+    "base64-arraybuffer": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.2.0.tgz",
+      "integrity": "sha512-7emyCsu1/xiBXgQZrscw/8KPRT44I4Yq9Pe6EGs3aPRTsWuggML1/1DTuZUuIaJPIm1FTDUVXl4x/yW8s0kQDQ=="
+    },
     "base64-js": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
@@ -4752,6 +4757,103 @@
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001036.tgz",
       "integrity": "sha512-jU8CIFIj2oR7r4W+5AKcsvWNVIb6Q6OZE3UsrXrZBHFtreT4YgTeOJtTucp+zSedEpTi3L5wASSP0LYIE3if6w=="
     },
+    "canvg": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/canvg/-/canvg-1.5.3.tgz",
+      "integrity": "sha512-7Gn2IuQzvUQWPIuZuFHrzsTM0gkPz2RRT9OcbdmA03jeKk8kltrD8gqUzNX15ghY/4PV5bbe5lmD6yDLDY6Ybg==",
+      "requires": {
+        "jsdom": "^8.1.0",
+        "rgbcolor": "^1.0.1",
+        "stackblur-canvas": "^1.4.1",
+        "xmldom": "^0.1.22"
+      },
+      "dependencies": {
+        "abab": {
+          "version": "1.0.4",
+          "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
+          "integrity": "sha1-X6rZwsB/YN12dw9xzwJbYqY8/U4="
+        },
+        "acorn": {
+          "version": "2.7.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
+          "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
+        },
+        "acorn-globals": {
+          "version": "1.0.9",
+          "resolved": "https://registry.npmjs.org/acorn-globals/-/acorn-globals-1.0.9.tgz",
+          "integrity": "sha1-VbtemGkVB7dFedBRNBMhfDgMVM8=",
+          "requires": {
+            "acorn": "^2.1.0"
+          }
+        },
+        "cssstyle": {
+          "version": "0.2.37",
+          "resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-0.2.37.tgz",
+          "integrity": "sha1-VBCXI0yyUTyDzu06zdwn/yeYfVQ=",
+          "requires": {
+            "cssom": "0.3.x"
+          }
+        },
+        "jsdom": {
+          "version": "8.5.0",
+          "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-8.5.0.tgz",
+          "integrity": "sha1-1Nj12/J2hjW2KmKCO5R89wcevJg=",
+          "requires": {
+            "abab": "^1.0.0",
+            "acorn": "^2.4.0",
+            "acorn-globals": "^1.0.4",
+            "array-equal": "^1.0.0",
+            "cssom": ">= 0.3.0 < 0.4.0",
+            "cssstyle": ">= 0.2.34 < 0.3.0",
+            "escodegen": "^1.6.1",
+            "iconv-lite": "^0.4.13",
+            "nwmatcher": ">= 1.3.7 < 2.0.0",
+            "parse5": "^1.5.1",
+            "request": "^2.55.0",
+            "sax": "^1.1.4",
+            "symbol-tree": ">= 3.1.0 < 4.0.0",
+            "tough-cookie": "^2.2.0",
+            "webidl-conversions": "^3.0.1",
+            "whatwg-url": "^2.0.1",
+            "xml-name-validator": ">= 2.0.1 < 3.0.0"
+          }
+        },
+        "parse5": {
+          "version": "1.5.1",
+          "resolved": "https://registry.npmjs.org/parse5/-/parse5-1.5.1.tgz",
+          "integrity": "sha1-m387DeMr543CQBsXVzzK8Pb1nZQ="
+        },
+        "stackblur-canvas": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/stackblur-canvas/-/stackblur-canvas-1.4.1.tgz",
+          "integrity": "sha1-hJqm+UsnL/JvZHH6QTDtH35HlVs="
+        },
+        "tr46": {
+          "version": "0.0.3",
+          "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+          "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o="
+        },
+        "webidl-conversions": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+          "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE="
+        },
+        "whatwg-url": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-2.0.1.tgz",
+          "integrity": "sha1-U5ayBD8CDub3BNnEXqhRnnJN5lk=",
+          "requires": {
+            "tr46": "~0.0.3",
+            "webidl-conversions": "^3.0.0"
+          }
+        },
+        "xml-name-validator": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-2.0.1.tgz",
+          "integrity": "sha1-TYuPHszTQZqjYgYb7O9RXh5VljU="
+        }
+      }
+    },
     "capture-exit": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/capture-exit/-/capture-exit-2.0.0.tgz",
@@ -5605,6 +5707,14 @@
         }
       }
     },
+    "css-line-break": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/css-line-break/-/css-line-break-1.1.1.tgz",
+      "integrity": "sha512-1feNVaM4Fyzdj4mKPIQNL2n70MmuYzAXZ1aytlROFX1JsOo070OsugwGjj7nl6jnDJWHDM8zRZswkmeYVWZJQA==",
+      "requires": {
+        "base64-arraybuffer": "^0.2.0"
+      }
+    },
     "css-loader": {
       "version": "3.4.2",
       "resolved": "https://registry.npmjs.org/css-loader/-/css-loader-3.4.2.tgz",
@@ -7485,6 +7595,10 @@
         "schema-utils": "^2.5.0"
       }
     },
+    "file-saver": {
+      "version": "github:eligrey/FileSaver.js#e865e37af9f9947ddcced76b549e27dc45c1cb2e",
+      "from": "github:eligrey/FileSaver.js#1.3.8"
+    },
     "file-uri-to-path": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
@@ -8406,6 +8520,14 @@
         }
       }
     },
+    "html2canvas": {
+      "version": "1.0.0-rc.5",
+      "resolved": "https://registry.npmjs.org/html2canvas/-/html2canvas-1.0.0-rc.5.tgz",
+      "integrity": "sha512-DtNqPxJNXPoTajs+lVQzGS1SULRI4GQaROeU5R41xH8acffHukxRh/NBVcTBsfCkJSkLq91rih5TpbEwUP9yWA==",
+      "requires": {
+        "css-line-break": "1.1.1"
+      }
+    },
     "htmlparser2": {
       "version": "3.10.1",
       "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.10.1.tgz",
@@ -10282,6 +10404,42 @@
       "resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
       "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM="
     },
+    "jspdf": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/jspdf/-/jspdf-1.5.3.tgz",
+      "integrity": "sha512-J9X76xnncMw+wIqb15HeWfPMqPwYxSpPY8yWPJ7rAZN/ZDzFkjCSZObryCyUe8zbrVRNiuCnIeQteCzMn7GnWw==",
+      "requires": {
+        "canvg": "1.5.3",
+        "file-saver": "github:eligrey/FileSaver.js#1.3.8",
+        "html2canvas": "1.0.0-alpha.12",
+        "omggif": "1.0.7",
+        "promise-polyfill": "8.1.0",
+        "stackblur-canvas": "2.2.0"
+      },
+      "dependencies": {
+        "base64-arraybuffer": {
+          "version": "0.1.5",
+          "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz",
+          "integrity": "sha1-c5JncZI7Whl0etZmqlzUv5xunOg="
+        },
+        "css-line-break": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/css-line-break/-/css-line-break-1.0.1.tgz",
+          "integrity": "sha1-GfIGOjPpX7KDG4ZEbAuAwYivRQo=",
+          "requires": {
+            "base64-arraybuffer": "^0.1.5"
+          }
+        },
+        "html2canvas": {
+          "version": "1.0.0-alpha.12",
+          "resolved": "https://registry.npmjs.org/html2canvas/-/html2canvas-1.0.0-alpha.12.tgz",
+          "integrity": "sha1-OxmS48mz9WBjw1/WIElPN+uohRM=",
+          "requires": {
+            "css-line-break": "1.0.1"
+          }
+        }
+      }
+    },
     "jsprim": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
@@ -11383,6 +11541,11 @@
       "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
       "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0="
     },
+    "nwmatcher": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/nwmatcher/-/nwmatcher-1.4.4.tgz",
+      "integrity": "sha512-3iuY4N5dhgMpCUrOVnuAdGrgxVqV2cJpM+XNccjR2DKOB1RUP0aA+wGXEiNziG/UKboFyGBIoKOaNlJxx8bciQ=="
+    },
     "nwsapi": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/nwsapi/-/nwsapi-2.2.0.tgz",
@@ -11517,6 +11680,11 @@
       "resolved": "https://registry.npmjs.org/obuf/-/obuf-1.1.2.tgz",
       "integrity": "sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg=="
     },
+    "omggif": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/omggif/-/omggif-1.0.7.tgz",
+      "integrity": "sha1-WdLuywJj3oRjWz/riHwMmXPx5J0="
+    },
     "on-finished": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.3.0.tgz",
@@ -13326,6 +13494,11 @@
       "resolved": "https://registry.npmjs.org/promise-inflight/-/promise-inflight-1.0.1.tgz",
       "integrity": "sha1-mEcocL8igTL8vdhoEputEsPAKeM="
     },
+    "promise-polyfill": {
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/promise-polyfill/-/promise-polyfill-8.1.0.tgz",
+      "integrity": "sha512-OzSf6gcCUQ01byV4BgwyUCswlaQQ6gzXc23aLQWhicvfX9kfsUiUhgt3CCQej8jDnl8/PhGF31JdHX2/MzF3WA=="
+    },
     "prompts": {
       "version": "2.3.2",
       "resolved": "https://registry.npmjs.org/prompts/-/prompts-2.3.2.tgz",
@@ -14548,6 +14721,11 @@
       "resolved": "https://registry.npmjs.org/rgba-regex/-/rgba-regex-1.0.0.tgz",
       "integrity": "sha1-QzdOLiyglosO8VI0YLfXMP8i7rM="
     },
+    "rgbcolor": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/rgbcolor/-/rgbcolor-1.0.1.tgz",
+      "integrity": "sha1-1lBezbMEplldom+ktDMHMGd1lF0="
+    },
     "rimraf": {
       "version": "2.6.3",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
@@ -15334,6 +15512,11 @@
       "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-1.0.2.tgz",
       "integrity": "sha512-MTX+MeG5U994cazkjd/9KNAapsHnibjMLnfXodlkXw76JEea0UiNzrqidzo1emMwk7w5Qhc9jd4Bn9TBb1MFwA=="
     },
+    "stackblur-canvas": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/stackblur-canvas/-/stackblur-canvas-2.2.0.tgz",
+      "integrity": "sha512-5Gf8dtlf8k6NbLzuly2NkGrkS/Ahh+I5VUjO7TnFizdJtgpfpLLEdQlLe9umbcnZlitU84kfYjXE67xlSXfhfQ=="
+    },
     "state-toggle": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/state-toggle/-/state-toggle-1.0.3.tgz",
@@ -18861,6 +19044,11 @@
       "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
       "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw=="
     },
+    "xmldom": {
+      "version": "0.1.31",
+      "resolved": "https://registry.npmjs.org/xmldom/-/xmldom-0.1.31.tgz",
+      "integrity": "sha512-yS2uJflVQs6n+CyjHoaBmVSqIDevTAWrzMmjG1Gc7h1qQ7uVozNhEPJAwZXWyGQ/Gafo3fCwrcaokezLPupVyQ=="
+    },
     "xregexp": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.3.0.tgz",

package.json

@@ -14,15 +14,17 @@
     "@vuepress/plugin-google-analytics": "^1.4.0",
     "autoprefixer": "^9.7.5",
     "axios": "^0.19.2",
+    "html2canvas": "^1.0.0-rc.5",
     "i18next": "^19.3.4",
+    "jspdf": "^1.5.3",
     "lodash": "^4.17.15",
     "postcss-cli": "^7.1.0",
+    "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "react-i18next": "^11.3.4",
     "react-markdown": "^4.3.1",
     "react-scripts": "3.4.1",
     "react-toastify": "^5.5.0",
-    "react": "^16.13.1",
     "tailwindcss": "^1.2.0",
     "uuid": "^7.0.2",
     "vuepress": "^1.4.0"

src/components/App/App.js

@@ -1,23 +1,31 @@
-import React, { useEffect, useContext, Suspense } from 'react';
+import React, { useRef, useEffect, useContext, Suspense } from 'react';
 import { useTranslation } from 'react-i18next';
 
 import AppContext from '../../context/AppContext';
+import PageContext from '../../context/PageContext';
+
 import LeftSidebar from '../LeftSidebar/LeftSidebar';
 import RightSidebar from '../RightSidebar/RightSidebar';
 
 import templates from '../../templates';
 
 const App = () => {
+  const pageRef = useRef(null);
   const { i18n } = useTranslation();
+
   const context = useContext(AppContext);
   const { state, dispatch } = context;
   const { theme, settings } = state;
 
+  const pageContext = useContext(PageContext);
+  const { setPageElement } = pageContext;
+
   useEffect(() => {
+    setPageElement(pageRef);
     i18n.changeLanguage(settings.language);
     const storedState = JSON.parse(localStorage.getItem('state'));
     dispatch({ type: 'import_data', payload: storedState });
-  }, [dispatch, i18n, settings.language]);
+  }, [dispatch, setPageElement, i18n, settings.language]);
 
   return (
     <Suspense fallback="Loading...">
@@ -25,11 +33,7 @@ const App = () => {
         <LeftSidebar />
 
         <div className="z-0 h-screen col-span-3 flex justify-center items-center overflow-scroll">
-          <div
+          <div id="page" ref={pageRef} className="my-auto shadow-2xl">
-            id="page"
-            className="animated fadeIn my-auto shadow-2xl"
-            style={{ animationDelay: '500ms' }}
-          >
             {templates.find(x => theme.layout.toLowerCase() === x.key).component()}
           </div>
         </div>

src/components/RightSidebar/RightSidebar.js

@@ -43,7 +43,7 @@ const RightSidebar = () => {
       name: t('about.title'),
     },
   ];
-  const [currentTab, setCurrentTab] = useState(tabs[0].key);
+  const [currentTab, setCurrentTab] = useState(tabs[3].key);
 
   const onChange = (key, value) => {
     dispatch({

src/components/RightSidebar/tabs/Actions.js

@@ -1,9 +1,16 @@
+/* eslint-disable new-cap */
 /* eslint-disable jsx-a11y/anchor-has-content */
 /* eslint-disable jsx-a11y/anchor-is-valid */
-import React, { useRef } from 'react';
+import React, { useRef, useContext } from 'react';
 import { useTranslation, Trans } from 'react-i18next';
+import html2canvas from 'html2canvas';
+import * as jsPDF from 'jspdf';
+
+import PageContext from '../../../context/PageContext';
 
 const ActionsTab = ({ data, theme, dispatch }) => {
+  const pageContext = useContext(PageContext);
+  const { pageElement } = pageContext;
   const { t } = useTranslation('rightSidebar');
   const fileInputRef = useRef(null);
 
@@ -17,6 +24,35 @@ const ActionsTab = ({ data, theme, dispatch }) => {
     fr.readAsText(event.target.files[0]);
   };
 
+  const printAsPdf = () => {
+    pageElement.current.style.maxHeight = 'fit-content';
+    pageElement.current.style.overflow = 'visible';
+    html2canvas(pageElement.current, {
+      useCORS: true,
+      allowTaint: true,
+    }).then(canvas => {
+      pageElement.current.style.maxHeight = '29.7cm';
+      pageElement.current.style.overflow = 'scroll';
+      const image = canvas.toDataURL('image/jpeg', 1.0);
+      const doc = new jsPDF('p', 'px', 'a4');
+      const pageWidth = doc.internal.pageSize.getWidth();
+      const pageHeight = doc.internal.pageSize.getHeight();
+
+      const widthRatio = pageWidth / canvas.width;
+      const heightRatio = pageHeight / canvas.height;
+      const ratio = widthRatio > heightRatio ? heightRatio : widthRatio;
+
+      const canvasWidth = canvas.width * ratio;
+      const canvasHeight = canvas.height * ratio;
+
+      const marginX = (pageWidth - canvasWidth) / 2;
+      const marginY = (pageHeight - canvasHeight) / 2;
+
+      doc.addImage(image, 'JPEG', marginX, marginY, canvasWidth, canvasHeight);
+      doc.output('dataurlnewwindow');
+    });
+  };
+
   const exportToJson = () => {
     const backupObj = { data, theme };
     const dataStr = `data:text/json;charset=utf-8,${encodeURIComponent(JSON.stringify(backupObj))}`;
@@ -90,7 +126,7 @@ const ActionsTab = ({ data, theme, dispatch }) => {
 
         <button
           type="button"
-          onClick={() => window.print()}
+          onClick={printAsPdf}
           className="mt-4 bg-blue-600 hover:bg-blue-700 text-white text-sm font-medium py-2 px-5 rounded"
         >
           <div className="flex justify-center items-center">

src/context/PageContext.js

@@ -0,0 +1,23 @@
+import React, { useState } from 'react';
+
+const PageContext = React.createContext(null);
+const { Provider } = PageContext;
+
+const StateProvider = ({ children }) => {
+  const [pageElement, setPageElement] = useState(null);
+  return (
+    <Provider
+      value={{
+        pageElement,
+        setPageElement,
+      }}
+    >
+      {children}
+    </Provider>
+  );
+};
+
+export const PageProvider = StateProvider;
+export const PageConsumer = PageContext.Consumer;
+
+export default PageContext;

src/i18n/index.js

@@ -23,10 +23,9 @@ const languages = [
 ];
 
 i18n.use(initReactI18next).init({
+  resources,
   lng: 'en',
   fallbackLng: 'en',
-  resources,
-  debug: true,
   ns: ['app', 'leftSidebar', 'rightSidebar'],
   defaultNS: 'app',
 });

src/index.css

@@ -66,8 +66,8 @@ ul li {
 
   #page {
     width: 21cm;
-    height: 29.7cm;
+    min-height: 29.7cm;
-    padding: 2.5em;
+    max-height: 29.7cm;
     zoom: 0.8;
     overflow: scroll;
     background-color: white;
@@ -90,7 +90,6 @@ ul li {
 
   #page,
   #page * {
-    page-break-inside: avoid;
     visibility: visible;
   }
 

src/index.js

@@ -9,6 +9,7 @@ import './index.css';
 
 import * as serviceWorker from './serviceWorker';
 import { AppProvider } from './context/AppContext';
+import { PageProvider } from './context/PageContext';
 import App from './components/App/App';
 
 toast.configure({
@@ -21,7 +22,9 @@ toast.configure({
 ReactDOM.render(
   <React.StrictMode>
     <AppProvider>
+      <PageProvider>
         <App />
+      </PageProvider>
     </AppProvider>
   </React.StrictMode>,
   document.getElementById('root'),

src/templates/onyx/Onyx.js

@@ -230,6 +230,7 @@ const Onyx = () => {
 
   return (
     <div
+      className="p-10"
       style={{
         fontFamily: theme.font.family,
         backgroundColor: theme.colors.background,