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ActiveReportsJS: Fonts Configuration

Fonts 101

All the ActiveReportsJS components operate in a web-browser environment.

Usually, a report consists of textual content that the browser renders by using shapes called glyphs. Font resources contain information that maps character codes to glyphs that represent these characters. Browser, therefore, needs to have access to font resources to display the text as expected.


All textual items in ActiveReportsJS have several font properties, including

  • Font Family: the font ID, f.e. Arial, Calibri, or Times New Roman

  • Font Style: normal or italic

  • Font Weight: Thin, Extra Light, Light, Normal, Medium, SemiBold, Bold, Extra Bold, Heavy

A unique combination of these three properties called Font Face. A font family typically consists of several font faces, usually represented by separate files. For instance, here is the screenshot of Calibry font family folder in Windows:




When ActiveReportsJS renders report, it translates these font properties to font-family, font-style, and font-weight CSS style properties and relies on a browser to resolve associated font resources and extract required glyphs. The browser has two ways to access font resources - they may be installed locally on the system on which a browser is running or downloadable.


Using downloadable font resources is easy to maintain; all the modern browsers support it, and it guarantees the consistent output of textual content across all the environments. Besides, ActiveReportsJS PDF Export requires downloadable fonts because it embeds their subsets in a PDF document.

Therefore, the best way to ensure the consistent report output across all the environments is to configure ActiveReportsJS components to access downloadable font resources. This page offers a step-by-step guideline to achieve that.


First off, decide which font families you are going to use in reports. It could be standard fonts, such as Arial, Times New Roman, or Helvetica. It could be one or more web fonts. We use Montserrat font for the reports on the demo-website. In any case, make sure that you have all the font face files for all the font families. ActiveReportsJS supports the following font formats:

Font Format

File Extension

Notes

WOFF 1.0 (Web Open Font Format)

*.woff


WOFF 2.0 (Web Open Font Format)

*.woff2

IE11 does not support it

TrueType

*.ttf


OpenType

*.ttf, *.otf


Configure the standalone designer application

You can find the standalone report designer font configuration at the following locations.

  • Windows : %AppData%\ActiveReportsJS Designer\fontsConfig.json

  • MacOS: ~/Library/Application Support/ActiveReportsJS Designer/fontsConfig.json

  • Linux: ~/.config/ActivereportsJS Designer/fontsConfig.json

Create a folder named Fonts and copy to it all the files for all the fonts faces that you will be using for reports


Then, open the fontsConfig.json file in your favorite JSON editor. This file contains descriptors for font faces that a report author will use for textual content. In the path property, specify the absolute path to the parent folder of the Fonts directory.

Replace the default items of the descriptors array with the descriptors of the desired font faces. Each descriptor includes the following properties:

Property Name

Description

Notes

name

the font family name

For instance, "Arial" or "Times New Roman"

style

the font face style

"normal" or "italic"

weight

the font face weight

it is recommended to use numeric values from 100 to 900. Visit the CSS specifiction for details.

source

the relative path to the font face file

For instance, "Fonts/Calibri/calibri.ttf"

For example, to allow Montserrat font, you can add the following descriptors

Example of the "descriptors" field value in fontsConfig.json

{
    "name": "Montserrat",
    "weight": "100",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-Thin.ttf"
},
{
    "name": "Montserrat",
    "weight": "100",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-ThinItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "200",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-ExtraLight.ttf"
},
{
    "name": "Montserrat",
    "weight": "200",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-ExtraLightItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "300",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-Light.ttf"
},
{
    "name": "Montserrat",
    "weight": "300",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-LightItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "400",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-Regular.ttf"
},
{
    "name": "Montserrat",
    "weight": "400",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-Italic.ttf"
},
{
    "name": "Montserrat",
    "weight": "500",
    "source": "Fonts/Montserrat/Montserrat-Medium.ttf"
},
{
    "name": "Montserrat",
    "weight": "500",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-MediumItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "600",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-SemiBold.ttf"
},
{
    "name": "Montserrat",
    "weight": "600",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-SemiBoldItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "700",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-Bold.ttf"
},
{
    "name": "Montserrat",
    "weight": "700",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-BoldItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "800",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-ExtraBold.ttf"
},
{
    "name": "Montserrat",
    "weight": "800",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-ExtraBoldItalic.ttf"
},
{
    "name": "Montserrat",
    "weight": "900",
    "style": "normal",
    "source": "Fonts/Montserrat/Montserrat-Black.ttf"
},
{
    "name": "Montserrat",
    "weight": "900",
    "style": "italic",
    "source": "Fonts/Montserrat/Montserrat-BlackItalic.ttf"
}

Run the standalone designer application, add a TextBox in a report's body and make sure that you can set its Font Family property to one of the fonts you enumerated in the fontsConfig.json file and all the font faces are correctly displayed.

Configure ActiveReportsJS-based application

An application that displays reports in the report viewer, exports reports to PDF, or hosts the report designer component should use the same configuration you created for the standalone designer application. The easiest way to achieve that is to copy those above Fonts folder and fontsConfig.json file to an application's static assets folder. This folder varies for different front-end frameworks. Here are some examples:

  • Using the Public Folder for React applications created with create-react-app

  • Assets configuration for Angular applications. If the Fonts folder and the fontsConfig.json file are copied to the assets folder, then modify the source properties of font descriptors in the fontsConfig.json file so that they would start with assets, for example

{
    "name": "Montserrat",
    "weight": "900",
    "style": "italic",
    "source": "assets/Fonts/Montserrat/Montserrat-BlackItalic.ttf"
}  

Finally, the application should call the registerFonts method of the FontStore object with the URL of the fontsConfig file.

This code should run before the application starts displaying or exporting reports. Note that the registerFonts method is asynchronous and returns the Promise object. Optionally, the code that calls this method can wait until this returned Promise resolves before loading reports in the viewer component or exporting them.


Example for pure JavaScript applications:

<script src="https://cdn.mescius.com/activereportsjs/5.latest/dist/ar-js-core.js"></script>
<script>
  MESCIUS.ActiveReportsJS.Core.FontStore.registerFonts(
    "/resources/fontsConfig.json" // replace the URL with the actual one
  )
</script>  

Example for Angular, React, and Vue applications:

import { Core } from "@mescius/activereportsjs";
Core.FontStore.registerFonts("/assets/fontConfig.json") // replace the URL with the actual one

You could find examples of such a code in our live demos.

Configure Report Designer Component

To ensure that the report designer component displays the registered fonts only, you can pass the DesignerConfig object that has the fontSet property set to registered. You can check the Customization page to learn more about the DesignerConfig usage.

References