[K8] Added Inter font files for new theme (#102359)

Updated the `Fonts` file to accept a `themeVersion` and only use the old Beta files if `v7`.

src/core/server/core_app/assets/fonts/inter/LICENSE.txt

@@ -0,0 +1,94 @@
+Copyright (c) 2016-2020 The Inter Project Authors.
+"Inter" is trademark of Rasmus Andersson.
+https://github.com/rsms/inter
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION AND CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

src/core/server/core_app/assets/fonts/readme.md

@@ -1,7 +1,8 @@
 ## Font usage
 
-Kibana packages two fonts:
+Kibana packages three fonts:
 
+* [Inter](https://rsms.me/inter/) fonts were pulled from their site and are at v3.18
 * [Inter UI](https://rsms.me/inter/) fonts were pulled from their site and are at v3.2
 * [Roboto Mono](https://fonts.google.com/specimen/Roboto+Mono) was pulled from the Google Fonts website on January 22, 2019.
 

src/core/server/rendering/rendering_service.tsx

@@ -78,6 +78,7 @@ export class RenderingService {
           locale: i18n.getLocale(),
           darkMode,
           stylesheetPaths,
+          themeVersion,
           injectedMetadata: {
             version: env.packageInfo.version,
             buildNumber: env.packageInfo.buildNum,

src/core/server/rendering/types.ts

@@ -24,6 +24,7 @@ export interface RenderingMetadata {
   i18n: typeof i18n.translate;
   locale: string;
   darkMode: boolean;
+  themeVersion?: string;
   stylesheetPaths: string[];
   injectedMetadata: {
     version: string;

src/core/server/rendering/views/fonts.tsx

@@ -14,6 +14,7 @@ import { RenderingMetadata } from '../types';
 
 interface Props {
   url: RenderingMetadata['uiPublicUrl'];
+  themeVersion?: string;
 }
 
 interface FontFace {
@@ -27,8 +28,145 @@ interface FontFace {
   }>;
 }
 
-export const Fonts: FunctionComponent<Props> = ({ url }) => {
-  const interUi: FontFace = {
+/**
+ * `Inter` is the latest version of `Inter UI` and used specifically in v8 of Kibana from EUI Amsterdam
+ */
+const getInter = (url: string): FontFace => {
+  return {
+    family: 'Inter',
+    variants: [
+      {
+        style: 'normal',
+        weight: 100,
+        sources: [`${url}/fonts/inter/Inter-Thin.woff2`, `${url}/fonts/inter/Inter-Thin.woff`],
+      },
+      {
+        style: 'italic',
+        weight: 100,
+        sources: [
+          `${url}/fonts/inter/Inter-ThinItalic.woff2`,
+          `${url}/fonts/inter/Inter-ThinItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 200,
+        sources: [
+          `${url}/fonts/inter/Inter-ExtraLight.woff2`,
+          `${url}/fonts/inter/Inter-ExtraLight.woff`,
+        ],
+      },
+      {
+        style: 'italic',
+        weight: 200,
+        sources: [
+          `${url}/fonts/inter/Inter-ExtraLightItalic.woff2`,
+          `${url}/fonts/inter/Inter-ExtraLightItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 300,
+        sources: [`${url}/fonts/inter/Inter-Light.woff2`, `${url}/fonts/inter/Inter-Light.woff`],
+      },
+      {
+        style: 'italic',
+        weight: 300,
+        sources: [
+          `${url}/fonts/inter/Inter-LightItalic.woff2`,
+          `${url}/fonts/inter/Inter-LightItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 400,
+        sources: [
+          `${url}/fonts/inter/Inter-Regular.woff2`,
+          `${url}/fonts/inter/Inter-Regular.woff`,
+        ],
+      },
+      {
+        style: 'italic',
+        weight: 400,
+        sources: [`${url}/fonts/inter/Inter-Italic.woff2`, `${url}/fonts/inter/Inter-Italic.woff`],
+      },
+      {
+        style: 'normal',
+        weight: 500,
+        sources: [`${url}/fonts/inter/Inter-Medium.woff2`, `${url}/fonts/inter/Inter-Medium.woff`],
+      },
+      {
+        style: 'italic',
+        weight: 500,
+        sources: [
+          `${url}/fonts/inter/Inter-MediumItalic.woff2`,
+          `${url}/fonts/inter/Inter-MediumItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 600,
+        sources: [
+          `${url}/fonts/inter/Inter-SemiBold.woff2`,
+          `${url}/fonts/inter/Inter-SemiBold.woff`,
+        ],
+      },
+      {
+        style: 'italic',
+        weight: 600,
+        sources: [
+          `${url}/fonts/inter/Inter-SemiBoldItalic.woff2`,
+          `${url}/fonts/inter/Inter-SemiBoldItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 700,
+        sources: [`${url}/fonts/inter/Inter-Bold.woff2`, `${url}/fonts/inter/Inter-Bold.woff`],
+      },
+      {
+        style: 'italic',
+        weight: 700,
+        sources: [
+          `${url}/fonts/inter/Inter-BoldItalic.woff2`,
+          `${url}/fonts/inter/Inter-BoldItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 800,
+        sources: [
+          `${url}/fonts/inter/Inter-ExtraBold.woff2`,
+          `${url}/fonts/inter/Inter-ExtraBold.woff`,
+        ],
+      },
+      {
+        style: 'italic',
+        weight: 800,
+        sources: [
+          `${url}/fonts/inter/Inter-ExtraBoldItalic.woff2`,
+          `${url}/fonts/inter/Inter-ExtraBoldItalic.woff`,
+        ],
+      },
+      {
+        style: 'normal',
+        weight: 900,
+        sources: [`${url}/fonts/inter/Inter-Black.woff2`, `${url}/fonts/inter/Inter-Black.woff`],
+      },
+      {
+        style: 'italic',
+        weight: 900,
+        sources: [
+          `${url}/fonts/inter/Inter-BlackItalic.woff2`,
+          `${url}/fonts/inter/Inter-BlackItalic.woff`,
+        ],
+      },
+    ],
+  };
+};
+
+const getInterUi = (url: string): FontFace => {
+  return {
     family: 'Inter UI',
     variants: [
       {
@@ -177,7 +315,10 @@ export const Fonts: FunctionComponent<Props> = ({ url }) => {
       },
     ],
   };
-  const roboto: FontFace = {
+};
+
+const getRoboto = (url: string): FontFace => {
+  return {
     family: 'Roboto Mono',
     variants: [
       {
@@ -229,12 +370,20 @@ export const Fonts: FunctionComponent<Props> = ({ url }) => {
       },
     ],
   };
+};
+
+export const Fonts: FunctionComponent<Props> = ({ url, themeVersion }) => {
+  /**
+   * If `themeVersion` is not provided, we want to fallback to the newest font family `Inter`
+   */
+  const sansFont = themeVersion === 'v7' ? getInterUi(url) : getInter(url);
+  const codeFont = getRoboto(url);
 
   return (
     <style
       dangerouslySetInnerHTML={{
         __html: `
-        ${[interUi, roboto]
+        ${[sansFont, codeFont]
           .flatMap(({ family, variants }) =>
             variants.map(({ style, weight, format, sources, unicodeRange }) => {
               const src = sources
@@ -260,64 +409,6 @@ export const Fonts: FunctionComponent<Props> = ({ url }) => {
             })
           )
           .join('\n')}
-        /*
-        Single variable font.
-
-        Note that you may want to do something like this to make sure you're serving
-        constant fonts to older browsers:
-        html {
-          font-family: 'Inter UI', sans-serif;
-        }
-        @supports (font-variation-settings: normal) {
-          html {
-            font-family: 'Inter UI var', sans-serif;
-          }
-        }
-
-        BUGS:
-        - Safari 12.0 will default to italic instead of regular when font-weight
-          is provided in a @font-face declaration.
-          Workaround: Use 'Inter UI var alt' for Safari, or explicitly set
-          \`font-variation-settings: 'slnt' DEGREE\`.
-
-        @font-face {
-          font-family: 'Inter UI var';
-          font-weight: 100 900;
-          font-style: oblique 0deg 10deg;
-          src:
-            url('${url}/fonts/inter_ui/Inter-UI.var.woff2') format('woff2-variations'),
-            url('${url}/fonts/inter_ui/Inter-UI.var.woff2') format('woff2');
-        }
-
-        'Inter UI var alt' is recommended for Safari and Edge, for reliable italics.
-
-        @supports (font-variation-settings: normal) {
-          html {
-            font-family: 'Inter UI var alt', sans-serif;
-          }
-        }
-
-        @font-face {
-          font-family: 'Inter UI var alt';
-          font-weight: 100 900;
-          font-style: normal;
-          font-named-instance: 'Regular';
-          src:
-            url('${url}/fonts/inter_ui/Inter-UI-upright.var.woff2') format('woff2 supports variations(gvar)'),
-            url('${url}/fonts/inter_ui/Inter-UI-upright.var.woff2') format('woff2-variations'),
-            url('${url}/fonts/inter_ui/Inter-UI-upright.var.woff2') format('woff2');
-        }
-        @font-face {
-          font-family: 'Inter UI var alt';
-          font-weight: 100 900;
-          font-style: italic;
-          font-named-instance: 'Italic';
-          src:
-            url('${url}/fonts/inter_ui/Inter-UI-italic.var.woff2') format('woff2 supports variations(gvar)'),
-            url('${url}/fonts/inter_ui/Inter-UI-italic.var.woff2') format('woff2-variations'),
-            url('${url}/fonts/inter_ui/Inter-UI-italic.var.woff2') format('woff2');
-        }
-        */
       `,
       }}
     />

src/core/server/rendering/views/template.tsx

@@ -22,6 +22,7 @@ export const Template: FunctionComponent<Props> = ({
     uiPublicUrl,
     locale,
     darkMode,
+    themeVersion,
     stylesheetPaths,
     injectedMetadata,
     i18n,
@@ -36,7 +37,7 @@ export const Template: FunctionComponent<Props> = ({
         <meta httpEquiv="X-UA-Compatible" content="IE=edge,chrome=1" />
         <meta name="viewport" content="width=device-width" />
         <title>Elastic</title>
-        <Fonts url={uiPublicUrl} />
+        <Fonts themeVersion={themeVersion} url={uiPublicUrl} />
         {/* The alternate icon is a fallback for Safari which does not yet support SVG favicons */}
         <link rel="alternate icon" type="image/png" href={`${uiPublicUrl}/favicons/favicon.png`} />
         <link rel="icon" type="image/svg+xml" href={`${uiPublicUrl}/favicons/favicon.svg`} />